Plastic Recycling: Your Questions Answered

Firms responsible for a significant proportion of supermarket plastic packaging have signed a deal to reduce plastic pollution by 2025.More than 40 companies, including Procter & Gamble, Coca-Cola and Asda, have signed up with the government, trade associations and campaigners to form the UK Plastics Pact. The Pact says it's a once-in-a lifetime opportunity to rethink the way we use plastic and its impact on the environment. Recently, the government said it was considering banning plastic straws and cotton buds and this came hot on the heels of a proposal to make consumers pay a deposit on drinks bottles and cans.The increased motivation to curb plastic waste and boost recycling comes after the Blue Planet II series highlighted the threat of ocean pollution and showed footage of wildlife eating plastic.But as plastic continues to dominate our shopping aisles for now, we asked you to send in any questions you had about these latest proposals and plastic recycling.BBC Environment correspondent Matt McGrath answers Kathryn Baker's questionThe main way that plastic gets into the seas is via the world's major rivers. Research suggests that 95% of plastic is transported in this way. Eight of these rivers are found in Asia. The majority of the plastic in the oceans comes from China but other countries including Indonesia, the Philippines and Vietnam are also major polluters. However, consumer behaviour in developed countries including the UK, Europe and the US is also a major factor in pushing plastic into the world's waters. According to figures, US citizens produce around 120kg (264lbs) of plastic waste per person every year. The UK produces around 76kg (167lbs) of waste while in Sweden, it's around 18kg (40lbs). BBC Environment correspondent Matt McGrath answers Mark Bolt's questionA major step to expand the reduction of plastics beyond bud, straws and stirrers has been announced in the UK Plastics Pact.Apart from packaging, two of the biggest plastic problems are straws and ear buds. These are among the most widely used items that turn up on beaches around the UK. Plastic cotton buds are often flushed down toilets and are small enough to pass through water filter systems and end up being eaten by fish and other marine creatures. The scale of UK plastic straw use is staggering with a figure of eight-and-a-half billion thrown away each year. The government is consulting on these steps with a possible ban to be introduced next year. Campaigners say that these proposals by government are not enough, and many other products need to be phased out too including plastic film - the UK uses more than a million tonnes a year, most of which can't be recycled. Attempts to cut down on the use of plastic coffee cups in the UK by the introduction of a so-called "latte levy" fizzled out earlier this year. The government rejected the idea of a 25p charge on disposable cups, despite the considerable success of a 5p plastic bag charge introduced in England in 2015.BBC Environment correspondent Matt McGrath answers @DaveStock18's questionLast December, 193 countries committed to a UN plan to stop plastic waste entering the oceans. However, the commitment is not legally binding and doesn't have a timetable. And different countries have adopted different schemes. Around 40 have banned single-use plastic bags, with charges or outright prohibitions in place in China, Rwanda and many others including Bangladesh. Others including the UK are moving to ban plastic straws and cotton buds. Zero plastic waste shops are opening in many towns and cities while plastic-free aisles in stores was part of the 25-year plan for nature in the UK put forward by Prime Minister Theresa May.BBC Environment correspondent Matt McGrath answers David Carr's questionAny substantial action on an environmental problem like plastic pollution requires a number of key steps that take time. It needs a solid scientific base to determine the scale of the problem such as the landmark study in 2015 that showed the world the true scale of the plastic problem with around eight million tonnes entering the oceans every year. More importantly it also needs an informed and motivated public willing to change habits to deal with the problem. In that regard, the global impact of Blue Planet II can't be underestimated. Many governments including the UK, have moved relatively swiftly to consult on ways of curbing plastic use. Large global corporations have also indicated their willingness to reduce plastic over the past five years, but that tide has become a flood in the last year. MarianneYou will not need another recycling bin as the scheme will not operate through kerbside collections. In order to reclaim a deposit, customers will need to take their empty bottles to a collection point, which are likely to be located in shops and other public spaces. Some countries which already operate a similar deposit system have installed "reverse vending machines" to automate the process of reclaiming a deposit. Many of these machines are able to sort, crush and store used bottles.So-called "reverse-vending" has operated since 1984 in Sweden, where more than 90% of household waste is recycled.AnonymousYes, if people have discarded deposit bottles or cans without claiming the deposit, they are fair game for anyone to pick up.You will not need to prove you purchased the bottle in order to claim the deposit. In the times when there was a deposit on glass bottles in the UK, children often used to scoop up waste bottles to make a bit of pocket money. In some US states, the sight of hard-up "can men" or "can women" gathering cans and claiming the deposit is commonplace. Some pensioners in the German city of Berlin have taken to collecting plastic bottles to supplement their incomes. Arguably a high deposit fee would have the effect of maximising recycling, but also maximising the worth of discarded cans. While it is not yet known how high the deposit is expected to be in England, costs elsewhere range from 22p in Germany and 8p in Sweden.JaneThe scheme is only being introduced in England because waste policy is a devolved issue. For example, Wales was the first of the Nations to introduce a charge for plastic bags in shops in 2011. Northern Ireland followed suit in 2013, followed by Scotland in October 2014, and England in 2015. Scottish First Minister Nicola Sturgeon announced a similar deposit return scheme for Scotland in September 2017. MarkThe government is looking to devise a scheme that doesn't undermine local authority collections. But it's a tricky issue and, ultimately, the effects are uncertain at this stage.There has been some disruption to the recycling system since China resolved at the start of the year to ban imports of waste for recycling.JosephThere are more than 50 different types of plastics, making it more difficult to sort and reprocess than other materials. Nearly all types of plastics can be recycled, but the extent to which they are depends on factors such as whether the technology is available in the area you live.Many recycling collections in the UK have focused on key packaging types, for example plastic bottles, which are heavier than most other plastics and therefore relatively easy to sort. Often packaging can consist of more than one polymer type, which makes it more difficult to recycle. Problematic plastics include black plastic food trays, which are used by many supermarkets.They are generally not collected as sorting machines are not able to detect them - the carbon black makes them invisible.If they are collected, they are likely to be rejected at the sorting plant although companies are looking at new technology to get around this problem.Some companies now use yoghurt pots made out of polyethylene terephthalate - the same material that is used for plastic bottles, making them easily recyclable. But other yoghurt pots are made from polystyrene, which is not usually accepted in recycling schemes. Margarine tubs are often made from a wide range of polymers, which require technology not readily available in the UK - meaning it is often shipped abroad for recycling.Some district and borough councils collect plastic bags and film with their recycling, but they are not easy to sort mechanically meaning they are very costly to process.Paul MostynMany local authorities now allow residents to put plastic trays in their kerbside collection but recycling is managed locally, rather than by central government.What each council decides to recycle depends on the resources available. In Greater Manchester, the only plastic recycled is plastic bottles because they don't have the technology available to sort between different types.A bottle and a food tray, for example, can't be recycled together as they melt at different temperatures.Recycle for Greater Manchester, part of England's largest Waste Disposal Authority, says it focuses on plastic bottles as they are in demand by manufacturers that make new products, whereas there is low demand for plastics like yoghurt pots, margarine tubs and plastic trays.However, other areas, such as Surrey, are happy to take those items for recycling.According to the UK Household Plastics Collection Survey 2017, by Recoup - a UK organisation which recycles plastics, 76% of (298) local authorities in the UK collect plastic pots, tubs and trays.Only five local authorities out of 391 do not offer a collection service for plastic bottles, while 19% (75) collect plastic film and 9% (34) collect non-packaging plastics.To find out what you can recycle where you live, click here.L. HudsonPlastic bottles are the most commonly collected packaging type because they are easy to sort and can easily be recycled in the UK, where a far higher amount is used than in most countries because it is used as a milk container.Until recently, people were advised to remove lids from their plastic bottles because they were a different colour and could contaminate the bottle stream.However, many processors are now able to separate the lids from the bottles themselves.Check your local area. Peter HickmanYes, squeezable toothpaste tubes are difficult to recycle and it is unusual for councils to collect them as part of their collections schemes.This also applies to other squeezable tubes that contain products, like moisturising creams.However, the pump action toothpaste tubes are made from a different type of plastic and are easier to recycle.BenEven when plastics can be recycled, some people worry that doing so is even worse for the environment. Recycling paper and glass requires much less energy, so this is a concern more relevant to plastics.According to Prof Thomas Kinnaman, of Bucknell University in the US, recycling plastic uses roughly double the energy, labour and machinery necessary to put it in landfill.And all recycling has some environmental costs, including more trucks on the road. As modern incinerators produce less and less pollution, they could in theory become a more efficient option in the future.Governments are still encouraging recycling to reduce our need to extract ever more raw material from the environment.Moreover, leaving plastics in landfills can lead to greenhouses gases being released as they begin to break down. Karen LeeThe environmental pressure group Greenpeace sets out nine ways for people to reduce the amount of plastic they throw away.Their tips include: avoid packaged vegetables, carry a reusable cup and getting your milk delivered in glass bottles rather than buying plastics ones.Other tips include using Tupperware boxes instead of Clingfilm to keep food fresh and avoiding coffee capsules which cannot be recycled.

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How Can I Waterproof My Bag?
How Can I Waterproof My Bag?
What kind of bag do you have and are you waterproofing it to protect the bag or its contents? As the others have said, either buy a waterproof bag or go to an outdoor equipment shop and buy a can of waterproofing spray. You can also buy waterpoof covers to fit over bags or, alternatively, you can wrap the contents in plastic bags, as the bag itself should dry out easily enough (depending on the material)1. Landlord temting my apartment building?Yeah, pack up stuff in plastic bags! Ask about chemical reactions in a demanding way for your bed and furniture. Maybe find a new place to live.2. Why do my cats like to lay down on plastic bags?My cat always does this. If I come home with plastic shopping bags, as soon as she hears the rustle of the plastic she appears from nowhere! She even likes to sleep in one, but obviously I keep an eye on her as if the bag is completely closed she could suffocate. Also, she likes laying on newspaper.3. Now that you can recycle both, which is better, paper or plastic bags?paper, has less toxins. Its easier to be broken down by earth than plastics4. what are the harmful effects of the use of plastic bags?I do not know, but plastic bags are the recycled remains of certain plastics that can not be recycled again5. Keep Your Groceries Fresh With These Reusable Produce BagsWhether you are looking to introduce more zero-waste products into your lifestyle or simply want your fruits and veggies to stay fresh for longer, reusable produce bags are an easy and effective option. Replacing plastic bags with a sustainable and eco-friendly choice is good for the environment, but will also end up saving you money as you eliminate the need for plastic bags over time. The best reusable produce bags are great for storing your delicious fruits and vegetables in the fridge or pantry and come in a variety of shapes and sizes to accommodate your needs. We love silicone reusable bags that can stand up and keep your fridge organized. There are machine-washable bags, too, breathable mesh bags, and even compostable bags to choose from - so you can preserve both your groceries and the planet. Below, shop our favorite reusable produce bags. These machine-washable reusable produce bags are made of 100% polyester making them super lightweight and durable. Each translucent bag has a different colored exterior tag so you can color-coordinate your fruits and vegetables but also see what is inside, in case your fridge organization falls to the wayside. Reduce your single-use plastic consumption with these adorable drawstring bags. More: Reusable Cotton Rounds to Cut Down on Waste These silicone reusable produce bags are environmentally-friendly, dishwasher-safe, and can be used in the freezer. They are perfect for storing all of your weekly fruits, vegetables, and even leftover meals. We love the zipper top to seal in freshness and the stand-up design to save space in your fridge. Opt for these biodegradable quart-size storage bags to keep your produce fresh and contribute to your at-home compost bin! Made of compostable content like plant starches, these reusable bags are nontoxic and eco-friendly. The only downside is that it is recommended you use these bags within 9 months of purchase. Luckily, the brand also offers sandwich bags and snack bags if you prefer a small size. If you find yourself looking to store just a handful of fruits, a few larger veggies, and a ton of leafy greens, these mesh bags are perfect for you. This set of reusable mesh produce bags includes two small, four medium, and three larger-sized bags. Each mesh polyester bag folds up, so you can conveniently throw a few in your reusable grocery shopping bag and take your produce right from the store to the fridge. For your apples, oranges, lemons, and limes, these transparent reusable mesh produce bags are bound to keep your fridge fresh and organized. The transparent mesh allows you to easily see exactly what larger fruits and veggies you have left in your fridge without having to open each bag. Earthwise aims to save both the environment and your bank account with these durable bags as each bag has the potential to eliminate up to 1,000 plastic bags over its lifetime. Go green! The muslin fabric of these reusable produce bags is super breathable and actually keeps fruits and vegetables fresher for longer by allowing ethylene gas to escape. We love that the natural and organic material is perfect for storing produce in both the fridge and the pantry. Opt for this variety pack that includes two of each size option, so you can store everything from your apples and tomatoes to larger heads of romaine lettuce. These simple bags will keep your produce from rolling around your fridge or pantry and are perfect for carrying your goods to and from the local farmers market or grocery store. We love that while they work as reusable produce bags, they can also be used as a tote bag for the beach! These bags are environmentally friendly and also super versatile. These reusable mesh bags will add a pop of color to your fridge - from the vibrant produce you fill each see-through bag with, to the different colored drawstring closures. We love that the nylon mesh is strong enough to hold larger produce like bananas, carrots, or apples. Because of the high-quality nature of the fabric, it is recommended that you hand-wash these bags - but truthfully, they are worth it because they will actually save you money on buying single-use produce bags. This content is created and maintained by a third party, and imported onto this page to help users provide their email addresses. You may be able to find more information about this and similar content at piano.io
Bringing Something on an Airaplane ?
Bringing Something on an Airaplane ?
Try putting it in a shopping bag or plastic bag you can carry as your personnal item. It may have to be compressed a little1. Do I need to take my car to the mechanic if I have a plastic bag stuck under my car and is now melting?Yea, what you fairly desire to do to get it up (despite if its non everlasting) is to tug the panel interior the door. i understand that may not what you had to pay attention, yet its relating to the sole thank you to do it top with out tearing up greater effective than what is inaccurate already. Its no longer that problematical. there's a screw decrease than the pull handle, the window/lock controls will snap out and unplug, something is basically held in with plastic clips. once you get the panel aside/off then get a flashlight, pliers, and a flathead screwdriver reachable. you will could eliminate the clips that carry the bracket to the window then basically pull it up, and tape it closed for now. I artwork at a physique save, this could take you approximately an hour.2. Can you recycle the plastic bag that's inside of the cereal box?no u cant. GO GET IT OUT OF THE TRASH QUICK! heheh3. How much damage can a plastic bag can inflict on a car?If the bag was empty I doubt that you did any damage to your car. Hitting a live animal like a squirrel or something does nothing to most cars. I think your in the clear4. what is the purpose of having to put your liquids in a plastic bag when you travel?They are in the bag for rapid counting. Anything outside the bag is automatically "over the limit" and can not be brought on board5. i bought a girl a ring but i dont have a box, it came in a little plastic bag, how do i give it to her?do not give it to her in a baggie!! thats lame. whats the ring for? you could always go to a jeweler and ask for a box, or buy a small gift box and put it in there.6. is it safe for babby to play with plastic bag?I will pray for you and your neighbor. She shouldnt allow an idiot to play with her baby7. In Florida I just saw a large plastic bag hanging over the entrance. Supposed to keep flys and bugs out.????Yes, those bags are there to repell the flys and other flying insects. They actually work. You can also hang them around the edge of your patio or porch cover8. im juicing my on lemons does any one know how long you can keep it.?if keep it in glass bottles and add 2 table spoons of Oil to prevent the air and keep in refrigerator this way u can keep it for three months or u can put it in ice cubes containers and then keep it in plastic bag and u can use it when ever u like9. does wearing a plastic bag around your stomach help you lose weight?water weight but when you drink water it just goes back again10. Theres a plastic bag in a tree by my bedroom window and its ANNOYING the hell out of me?take off ur mask and show it ur face and it will fly away to its mom11. How do I melt an ice cube in a plastic bag in 5 min w/o direct contact We get tin foil white paper& 1 resource?you probably did sturdy. you are able to desire to experience pleased with your self, yet mabey the espresso became to warm mabey you are able to desire to have positioned some ice cubes in it lol the right thank you to shop somebody who's choking is the heimlich maneuver that is recommended to evaluate studying it cuz warm espresso wont constantly shop somebody who's chokeing12. Can a vacuum be created in a plastic bag ?You can, but the material will not keep its shape. Better would be a rigid plastic bottle (like a waater bottle) that can maintain its shape. With textiles, you would have to put it over some kind of frame.
Quick Answer: What Is the Process of Plastic Injection Moulding?
Quick Answer: What Is the Process of Plastic Injection Moulding?
Injection molding is the process of making custom plastic parts by injecting molten plastic material at high pressure into a metal mold. Just like other forms of plastic molding, after the molten plastic is injected into the mold, the mold is cooled and opened to reveal a solid plastic part. How is injection Moulding used? Injection moulding is a manufacturing process used for producing parts by injecting material into a closed mould. The material used for the part, the desired shape and features of the part, the material and design of the mould, and the properties of the moulding machine must all be taken into account.18 Jan 2016 What is the process of plastic? Plastics are made from natural materials such as cellulose, coal, natural gas, salt and crude oil through a polymerisation or polycondensation process. Two main processes are used to produce plastics - polymerisation and polycondensation - and they both require specific catalysts. What plastic is used for injection Moulding? Most thermoplastics can be processed by Injection Moulding. The table below lists some of the commonly used materials: Acrylonitrile-Butadiene-Styrene ABS. Nylon PA. What is the process of Moulding? Molding or moulding (see spelling differences) is the process of manufacturing by shaping liquid or pliable raw material using a rigid frame called a mold or matrix. This itself may have been made using a pattern or model of the final object. A mold is the counterpart to a cast. What is meant by plastic Moulding? Plastic moulding is the process of shaping plastic using a rigid frame or mould. A popular manufacturing option, plastic moulding techniques are responsible for many car parts, containers, signs and other high volume items. What are injection molds made of? Plastic injection molds are typically constructed from hardened or pre-hardened steel, aluminum, and/or beryllium-copper alloy. Steel molds cost more, but are often preferred because of their high durability. What is Moulding used for? Moulding (also spelled molding in the United States though usually not within the industry), also known as coving (United Kingdom, Australia), is a strip of material with various profiles used to cover transitions between surfaces or for decoration. What is polyethylene made of? Polyethylene is used in applications ranging for films, tubes, plastic parts, laminates, etc. in several markets (packaging, automotive, electrical, etc.). Polyethylene is made from the polymerization of ethylene (or ethene) monomer. Polyethylene chemical formula is (C2H4)n. What is the main ingredient in plastic? How Plastics Are Made. The term "plastics" includes materials composed of various elements such as carbon, hydrogen, oxygen, nitrogen, chlorine, and sulfur. Plastics typically have high molecular weight, meaning each molecule can have thousands of atoms bound together. What is the process of making plastic bags? In the blown-film extrusion process, small plastic pellets (called resin) are melted down under controlled conditions so that they become molten and pliable. They are then pressed (extruded) through a circular die gap to form a continuous tube of plastic. Most often, we transform the plastic into poly bags. Injection - The raw plastic material, usually in the form of pellets, is fed into the injection molding machine, and advanced towards the mold by the injection unit. During this process, the material is melted by heat and pressure. As the plastic cools, it will solidify into the shape of the desired part. What is the strongest plastic? Acrylic and polycarbonate are transparent plastics that are stronger than many other clear plastic sheet materials and are often used in architectural glazing applications when transparency and superior mechanical properties are required. High strength, stiff, low friction engineering plastic with good wear properties. What is the hardest type of plastic? The hardest forms of plastic include plastic that has been mixed with other types of materials such as a very recent discovery by a team of Bangalore researchers where they strengthened ordinary plastic with nano-diamond (incredibly, tiny bits of diamond invisible to the naked eye), a sheet of layered carbon and tiny 24 Aug 20101. I quit using plastic bags when shopping, now what do I do with the kitty litter?I went to the Feed and Seed store near Atlanta and bought a 50 lb. bag of alfalfa pellets for about $12. You can use it for animal feed, but it also makes wonderful kitty litter, too. It is 100% made from alfalfa plants. I flush the poop down the toilet and put the used pellets in a hole I dug in the corner of the yard. I will just have a couple of small holes and when one fills up, switch to the other while the first turns to compost. After it composts, you can spread it on the yard for natural fertilizer. But do not put the poop outside because it can contain parasites and bacteria that can be harmful to humans and other animals. Flush the poop. If you live in an apartment and do not have a yard, then just get a small diaper pail with a lid and put an empty kitty litter bag or container in the diaper pail to put the used litter into! When the empty container gets full, throw it out and you should have another empty one by then to put into the pail. That way the empty kitty litter bag gets used again, too!2. What are the Recycling rules?In Calgary these are the general rules - I would think most cities are pretty much the same. Items that are recyclable: Tin cans, tin foil, tin baking pans - keep the labels on, but wash Plastic bags - can all be bagged in one bag Shredded paper - can all be put in a bag All beverage bottles & caps- remove caps - wash Plastics #1 - #7 - wash and remove any caps Plastic wrap washed Cardboard boxes - cut down to size so they fit in the container Glass jars and bottles - wash and remove any lids Items that are not recyclable (in the blue bin): Styrofoam, clothing, shoes, dishes, organic materials The lid must be closed on the bid The bid must be about 2 feet away from your back fence, or propped parallel with the curb. (The wheels would facing your fence in an alleyway or curb in the front) If necessary build a small platform for the bin so it does not roll down a hill That's about it, it's pretty simple3. Can I recycle plastic bags from stores at the mall?yess! you most definitely can! hope i helpedddd :)))))))))))))))))
A Plastic Tide: Combatting the Scourge of Microplastics in Our Seas and Rivers
A Plastic Tide: Combatting the Scourge of Microplastics in Our Seas and Rivers
It was hailed as one of the finest wildlife television series ever made and at the end of the final episode of BBC's Blue Planet 2 last December, David Attenborough issued a plea: "The future of humanity - and all life - now depends on us."Earlier, viewers had watched aghast as the scale of the plastic pollution in the world's oceans was laid bare. It depicted albatross parents unwittingly feeding their chicks plastic and mother dolphins potentially exposing their newborn calves to pollutants through their contaminated milk. For many, it was an eye-opener about the harm that plastics - and our dependence on them - have caused to marine life all over the world. But it was no surprise to Karin Dubsky of Trinity College Dublin. The founder of Coastwatch Europe, the German-born campaigner is one of the country's foremost experts on how this island nation has been relentlessly polluting our seas and rivers with plastic. "Thirty years ago," she says, "the huge concern was oil spills, but now it's plastic and it's having a hugely detrimental effect. We've seen increased mortality in many species due to ingestion and entanglement."While there's some commendable volunteer work being conducted to clean up plastic litter in several coastal areas throughout the country, Dubsky insists it's only scratching the surface. "It's impossible to underestimate the impact that microplastics are having on marine life," she says. "It's causing havoc."Microplastics are defined as being less than 5mm in size and there are countless trillion of them in the world's waters. Together with 'microbeads' - a form of plastic used in several industries, including cosmetics where they're used in exfoliating products - they are ingested by seafood that we readily consume. That's a huge cause for concern, Dubsky insists. "There was a study by students from NUI Galway which looked at muscles caught on the west coast, and while some had some plastic contamination, others were very heavily contaminated. And we're eating them."The same study also uncovered evidence that Dublin Bay prawns (Norway lobster) caught on the west coast also were contaminated by plastic. Plastic is not biodegradable and the smaller it gets, the greater the trouble it causes to marine life - everything from a tiny plankton to an enormous whale. But larger plastics can be hazardous, too. Last year, there was shock when a photo emerged of naturalists in Norway displaying the 30 large plastic bags that had been found in the stomach of a beached whale. Dubsky was one of the primary campaigners for the introduction of the plastic bag levy and she says it's had a noticeable impact on our coastline. "When we conduct surveys now, there's only a fraction of the plastic bags that we used to see."Last year, Coastwatch found two plastic bags per site surveyed, rather than 18 bags in the same areas in 2004, two years after the levy was introduced. "It's certainly helped change people's behaviour, and it's had a direct improvement when it comes to our coastlines. We need to introduce more incentives."One of the most significant of the bigger plastic pollutants on Irish coasts are drink bottles and their lids. "If we had a deposit-return system for bottles, it would transform the situation," she says. "In Germany, where such a system is in place, you almost never see plastic bottles littering their shores and towns."And the problem is a significant one. In a Coastwatch survey last autumn, an average of 18 plastic drinks bottles per 500m of shore were found, and while it is the lowest number recorded since the early 1990s here, it is still indicative of a culture where many of us still seem happy to litter the natural environment. "We have to put pressure on retailers and manufactures not to use plastics. There is a direct link between the needless use of plastic to wrap fruit and vegetables in our supermarkets and the amount of plastic that's polluting our waters," Dubsky says. But she's keen to stress it's not just the consumer who's to blame. The commercial fishing industry has played a big part in plastic pollution thanks to its use of 'dollies' - plastic coatings for the bottom of dragnets to preserve their longevity - and traditional non-plastic lobster and crab traps have been widely replaced with plastic ones and some of them wind up on the sea floor. "You need only go out to Howth (Co Dublin) to see all these plastic traps lined up at the pier."Quite how much plastic is in the world's oceans remains a mystery, although there were suggestions this week from international scientists that plastic in the oceans may cumulatively equate to the total landmass of Mexico. "And all this has happened in the space of about 50 years," Karin Dubsky says. "It's only in that time that plastics have become commonplace. But we have the knowledge now of the harm they are causing and it is up to each and every one of us to take action and reduce or plastics usage."Indo Review
How to Avoid Bed Bug Bites | the Independent
They're unglamorous, but for regular travelers they're unfortunately sometimes part of the package - bed bugs have been in the media a lot recently, so what can travelers do to avoid them?Capable of giving nasty bites akin to those of a mosquito (but often in a tell-tale line rather than randomly on the body like a mosquito), bed bugs have been the cause of several law suits from disgruntled guests this year, particularly against hotels in New York.The best way to avoid a nasty confrontation is to avoid hotels reported to be infested at all, by using a website such as Bed Bug Registry , which lists reported cases, or all-round guide bedbugger.com On arrival, travelers should check out their rooms for signs of the nocturnal animals, says this guide from Bug Girl's Blog, keeping an eye out for the brown spots left by bed bugs' waste and places that they might hide during the stay, such as the headboard, wall, and mattress seams.It's also worth checking couches, drawers and furniture near the bed, as bed bugs don't like to live far from their food source - sleeping humans.To ensure you haven't picked up bed bugs from a contaminated place, keep suspect items in a plastic bag and wash them on the hottest temperature possible for the fabric, says the University of Minnesota's Dr Stephen A Kells in this paper For items that can't be washed, have them professionally dry-cleaned or hand wash them, scrubbing the seams and folds and ensuring the temperature is above 45ºC.Finally, if you get bitten, don't scratch it, but wash with warm soapy water and apply an anti-itch cream, says Dr Dini M. Miller on MSNBC
Back to School Help!Read Details! Get 10Points For1 with Best Outfit!?
Back to School Help!Read Details! Get 10Points For1 with Best Outfit!?
go to www.polyvore.com and type in first ay of school and people make collages of what to wear and on the side it tell you wear you can buy it i love that website go check it out• Related QuestionsHow do you like my first chapter?It sounds just like Twilight only difference is the chick is the vamp. I bet next chapter will feature a boy who has an 'aura' that makes her want to suck his blood or something equally ridiculous.Your originality staggers me.------Is this an incredibly stupid idea?technicality you shouldn't get in trouble for that... but i have gotten in trouble for similar things when i was in school... they called it a distraction to other students (i was doing the goth thing before it was popular).------What to wear now in Miami?TRAVEL LIGHT AND ALWAYS BRING A CHANGE OF CLOTHES FOR A NIGHT ON THE TOWN!! tHE BEACH IS THE NECESSARY BIKINI REGARDLESS, AND THE NIGHT LIFE IS NOT MUCH MORE IF YOUR LOOKIN FOR A GREAT TIME...........iT IS MIAMI!!!!!------Should I wear a dress or a skirt on Valentine's Day?It depends upon the weather for me really. Within the fall I like to wear longer skirts and in the wintertime I wear longer ones with my boots, however in the spring and summer I prefer to wear short summer dresses------am looking for a wedding gown that i saw in a magazine years ago, fell in love with it. now cant find it help?Have you gone to a bridal shop yet? There may be some that have an archive of sorts of wedding gowns (photos, magazines, etc) that you may be able to find something close if not 'the one'.Good luck & Congrats------Can anyone read about these dreams for me please?Well, i think you like this guy. But you may be scared and unsure of what your friends think of it. try talking to your friends :)help me? thanks ------how do i look cute with my dress code?oh gosh...wow, that must be tough but one word ACCESSORIES! i now leave you to think...try: hope you find something you like :)------Ladies what is a good outfit for fall weather?girl jeans--ripped.((makes guys look so effin sexy))brown and red colors.((to make you blend in with the season))and some nice high heels that are so god damm gourgous it makes girls jeloushahahhope this helpssexy bioch------How is my intro for my story?i don't think you should say "all the more scary looking" in paragraph # 2. and in paragraph # 3 maybe u should say the doll looked most appauling afyter seeing the red yarn stiched over the mouth. Other than that AWESOME!------How would someone with this personality look/dress like?So if she is wealthy and artistic, probably like beige trousers with a navy blue jacket and white top. OR mayeb this outfit jpg.------This is the first half of chapter 1 in my book I'm writing. Can anyone read it and tell me how it is?omfg that is such a good story it makes me think of the twilight saga i love how you give so many details and describe his face i love the names and you need to keep on writing keep me updated------What shall i do about my daughter starting middle school???!?Woah, when I was that age I went to bed at 9:00 and read for an hour. I would say 8:30 - 10:00. Take her on a shopping spree at Justice. They have 40% off sales and cute clothes too. No more movies and chocolate------does anybody want to make me an outfit?Age: 15 Gender: woman form: in maximum circumstances Skater with incredibly Like, Prep colors: Any shade of green, Black, pink, Blue, pink clothing: T-Shirts, Hoodies, skinny denims shops: PacSun, Delias, heat concern count number, Abercrombie shoes: communicate, autos upload-ons: Necklaces, rings------Back to school clothes shopping list!!?I like girls in jeans. It makes them look more home town like and it doesn't look like they try too much but if you are looking to get this men attention, this might not be what you would like------beauty tips for young teen plz?were just the same but im tall not short lolthis is what goes on menavy blue, tan , dark greensskinny jeansflats or kitten heelst-shirts on long vestslongs coats that elongats your figuehope this helps------shorts and a band-aid, or should i cover it up.?Shorts Shorts Shorts.Oh god Please Do Not Wear A Long Sleeve ShirtUnder A Spaghetti Strap Dress.Just Wear Shorts and Everything Will Be Fine,I Mean If You Have Your Ankle Brace,Then Why Does A Band Aid Matter.------Can i wear a long sleeves dress to prom?Hello:Yeah go for it. but if you'd like to be in style try making one out of clean unused plastic garbage/trash/bin bags. That material is in style these days. I hope I helped, if not I'm sorry.------Can i just wear a t-shirt and pants for ice skating and not a long sleeve or with jacket?well it depends if your a good skater or not ....if its your first time ... wear jeans ... it don't hurt as much when you fall over ... and also wear a jacketthe temperature is normally 0-3 degrees in indoor rinks------Winter mommies...what type of outfit?i live in michigan. so it may be a little different. plus my son was born in march. but he went home in a university of michigan sleeper. we had a huge snow storm the day my son was born too------fashion/dress for teen girls in boston?Boston gets very cold in the fall/winter so make sure you pack a lot of warm clothes such as jackets, sweatshirts/pants, jeans, long sleeves, etc...In September, you could probably wear shorts if it's early in the month------Cute Ways To Dress For School?This Site Might Help You.RE:Cute Ways To Dress For School?I really like blue jeans and layering shirts , what are some things i can use as comfy assecories and some cute casual things to do with my hair THANKS------At a traditional Catholic wedding w/o communion at 7pm, do I have to wear a long dress??I like girls in jeans. It makes them look more home town like and it generally does not look like they try too hard but if you are looking to get this men attention, this might not be what you want------I think one of my students is being neglected/abused?well...don't you have an obligation to report anything out of the ordinary?? I would talk to the guidance counselor at your school and see what the next approach would be...they are better equipped for situations like yours. good luck------I'm fashionably challenged please help?well, 10 things that a teenage girl must have in her wardrobe are1) a little black dress2) a trench coat3) heels4) neutral coloured flats5) neutral coloured handbag6) a cardigan7) a blazer8) a day dress9) good pair of jeans10) an all occasions top------What is your school's dress code?bottoms, below fingertips3finger sleeveswe are allowed to wear any type of shoes, including flipflopspajamas are not a problem, (besides by style)those saggy type hats are acceptable, but not like sports capsheadbands everyone wears themhoodsno------Which of these dresses do you like the most?hey, i like the first one which is pink. It will really suit your age. If you changed the color to Black would also be nice. I have noticed that all of the dresses are short. Yet they are really pretty!------Anyone else have a daughter/s like this?Well u cant get her all dresses because school starts in the fall which means winter is right around the corner and you just said that she'll wear pants wen its cold so yes get her some pants as well :)------Why do females athletes wear tiny clothing and males dont?Sad to say but I think they want to make a fashion statement. Who knows maybe it's an endorsement for the clothing and so they get money for it. You are right others do just fine and even win some!.------Do women care how a man dresses or is that only shallow immature girls who do?Clothes do matter to me, because they tell you a lot about someone.I just know that I'm going to probably get along better with a guy who has really casual style and dresses for comfort and function rather than fashion.------What is the Disneyland dress code you must have to work there?I really like little skirts and the real way i fix it being brief is leggings and coloured tights. Not the methods with holes however the ones that virtually look like leggings but are obviously tights as a result of material------15 year old girl always comes to class with injuries?Yes, because if there is an abusive parent, someone needs to intervene. Same case if this student's injuries were self-inflicted, which would indicate depression.Unless she secretly fights criminals in her free time and picked up injuries from there.------what can i wear over or under this dress to be warm at a New York evening Wedding? Shoes - Or if you don't like them look at the rest of the shoes on the site.------What kind of hairstyle will look nice with this dress?Angel,it incredibly is a quite gown,yet as a guy,i think of somewhat like the type interior the image,it exhibits the gown and your self greater powerful,in case you spot my factor,so have an astounding time to------Why am I the only one to dress for the cold appropriately at school?I asked myself this same question when I moved to CT. In the winter it gets cold. However, I see many people in shorts and a zipped or pullover sweater. No lie, I even seen this one girl in flip flops.------Anyone with a sense of fashion... please help?I have a good look Somethign like that.------Wearing A Cherry Red Dress To A Wedding?I like females in jeans. It makes them look more city like and it generally does not look like they are trying too hard but if you're trying to get this guys attention, this may well not be what you would like------What would you call my style???? :)?It's really cute and laid back. I think it's more of a girly style with a slight edge.Also, if you want to add details, you can. It's under the edit link on your question or something.------I need a new wardrobe for fall I'm 23. I want advice on what basic essentials I should get to mix and makeGet classic clothes that don't go out of style, and accessorize. The accessories can change with time and you can wear the same clothes as a base. You keep up with fashion trends this way, and save money too.------Where can I find a sweater dress for a reasonable price?urban planet, urban outfitters, costa blanca....those are the only ones i can think of, and i dont know if you have one near you or not.also, a good suggestion, thrift stores! cheap, and you never know what youll find:)------Fall wardrobe for school aged children?my daughter wears uniforms, so i replace them as needed. i never went heavy into shopping as they had plenty of clothes from the summer to last a few months into the school year. i replaced clothes as need then, too------I'm 15 and going to a Georgia wedding in November. What should I wear?!?This is a pretty dress, it's short so not too dressy, but still elegant. Forever 21 has lots of cute dresses...and cheap! ------Why do people think that western riders are pur redneck hillbillies that don't care about their horse?Same reason people think english riders are stuck up snobs that wear their jods so tight so the sticks don't fall out of their butts. Ignorance and bigotry.There are amazing riders of both disciplines. And total jerks in both.------Survey: What is your style? (GIRLS)?1. jeggins and pumps and top and cardigan2. demin skirt and tank top (if its actually hot)3. jeans/jeggins or skirt with tights, uggs and hoodie4. jeggins and hoodie, pumps or uggs5. hollister, river island, primark..random ones6. pink7. down and straightened------What do you think? I'll answer yours if you answer mine. A little bit long, but please help. I'm confused!?It does sound like he likes you, but he may be shy about it or unsure of what to do. You may need to make the first move if you really want something to happen between the two of you------for grae 8 grad i have a dress its like not straps or tube tops its full length and full sleeves but all the?Psh no,it sounds like there trying to be too grown up and to slut-like.As long as your dress is pretty and is not covering your body from the top pf your head to the floor, u should be fine.------Have no idea what to wear on first day?!? would work well :) I suggest lose fitting but not baggy shirt with shorts or boyfriend jeans :P------what is this fall's fashion?cuffed high boots, skinny jeans, and stripped long sleeve sweaters. Thick belts around the waist with a long white shirt and black leggings, kimono styke dresses and peep toe shoes... Try looking at this months issues of Lucky fashion magazine and glamour.
Design Scheme of Multi-channel Voltage Measurement Based on Stm32
Design Scheme of Multi-channel Voltage Measurement Based on Stm32
This design proposes a design scheme of multi-channel voltage measurement based on STM32 chip, and the measurement range is between 0-10V. The built-in A / D of STM32 samples the multi-channel voltage values to obtain the corresponding digital quantity. Then the corresponding analog voltage value is obtained according to the proportional relationship between digital quantity and analog quantity, which is displayed by TFTLCD display equipment, and the multi-channel collected data is stored in SD card.1. IntroductionIn recent years, data acquisition and its application have attracted more and more attention, and data acquisition system has developed rapidly. It can be widely used in various fields.Data acquisition technology is one of the important branches of information science. Data acquisition is also a process of obtaining object information from one or more signals. Data acquisition is an important link in industrial control systems. It is usually realized by some single chip microcomputer systems with relatively independent functions. As an indispensable part of the measurement and control system, the performance characteristics of data acquisition directly affect the whole system.Voltage measurement is the most universal. It is of great significance to study and design methods and instruments to improve voltage measurement accuracy. In the design of voltage measurement, single chip microcomputer as controller is the core of the whole design. In addition, there must be an analog-to-digital converter (ADC) in the design. ADC is used to directly collect analog voltage and convert analog signal into digital signal. It directly affects the accuracy and speed of data acquisition.2. System overviewThe microcontroller of this design adopts STM32 single chip microcomputer.STM32 Series MCU is designed based on the Cortex-M3 core of arm company. Its clock frequency reaches 72mhz. It is a high-performance product among similar products. It has the advantages of high performance, low cost and low power consumption. It is a good choice in embedded application design. The A / D converter in the design adopts STM32 built-in ADC. STM32 ADC is a 12 bit successive approximation analog-to-digital converter.It has up to 18 channels and can measure 16 external and 2 internal signal sources. The A / D conversion of each channel can be performed in single, continuous, scanning or intermittent mode. The conversion results can be stored in the 16 bit data register in left or right alignment. The maximum input clock can reach 14mhzThis design can measure the voltage value of 8 channels, the measurement range is 0-10V, and the display error is ± 0.001V. LCD displays the voltage value and waveform in real time, and microSD card synchronously stores the data. The system principle block diagram is shown in Figure 1.Design scheme of multi-channel voltage measurement based on stm323.3 LCD control circuitThe LCD used in this design is 2.4 inches, 320 & times; 240 resolution. The LCD module is controlled by the FSMC interface of STM32.FSMC (flexible static memory controller) can be changed into static storage controller. It is a unique storage control mechanism of STM32 series high storage density microcontroller with internal integration of flash of more than 256Kb and suffixes Xc, XD and Xe. By setting the special function register, FSMC can send corresponding data / address / control signal types according to different external memory types to match the speed of the signal, so that STM32 series microcontrollers can not only apply various external static memories of different types and speeds, Moreover, it can expand a variety of different types of static memory without adding external devices, so as to meet the comprehensive requirements of system design for storage capacity, product volume and cost.In STM32, one end of FSMC is connected to core Cortex-M3 through internal high-speed bus AHB, and the other end is an external bus for extended memory. After the access signal of the kernel to the external memory is sent to the AHB bus, it is converted into a signal conforming to the communication protocol of the external memory through the FSMC and sent to the corresponding pin of the external memory to realize the data interaction between the kernel and the external memory. FSMC acts as a bridge, which can not only convert the signal type, but also adjust the signal width and timing, so as to shield the differences of different storage types and make them no difference to the kernel.FSMC can connect devices such as nor / PSRAM / NAND / PC card, and has FSMC_ A [25:0] has 26 address buses and FSMC [15:0] has 16 data buses. In addition, the extended storage space of FSMC is divided into 8 blocks. Select the block of the operation through the address line. In this way, the LCD will operate as a memory with one address space.3.4 SD card drive circuitThe SD card used in this design is microSD, also known as TF card. MicroSD card is a very small flash memory card, which is mainly used in mobile phones. However, due to its small volume and the continuous improvement of storage capacity, it has been used in GPS devices, portable music players, digital cameras and some flash memory disks. The pin diagram of microSD card is shown in Figure 9.MicroSD card, like SD card, has SPI and SDIO operation buses. Compared with SDIO bus, SPI bus has simple interface, but its speed is slow. We use SDIO mode.MicroSD card has 4 data lines in SDIO mode.In fact, microSD has 1-wire mode and 4-wire mode in SDIO mode, that is, 1 or 4 data lines are used respectively. Of course, the speed of 4-wire mode is faster than that of 1-wire mode, but the operation is more complex. The 4-wire mode of SDIO is used in this design. The hardware connection diagram of microSD card is shown in Figure 3.STM32 MCU Chinese official websiteSTMicroelectronics / St / STM
How Does Temperature Affect the Speed of Sound?
How Does Temperature Affect the Speed of Sound?
As other answers show, the speed of sound is slightly influenced by temperature.Much more interesting is the influence of gradients in temperature! The usual distribution of temperature at different heights is: high at ground level, decreasing upwards. This profile, with slightly higher sound velocity at ground level causes wave fronts to curve upwards. Sometimes the temperature profile is inverse, from ground level to a certain height, in the order of hundreds of meters. This inversion layer acts as a reflector, causing sound to propagate over much larger distances.It is not the speed as such, but the differences in speed that have important influence on sound propagation.1. How to increase my running speed?No, leaping prime does now not make you a quicker runner. Speed is muscular so you will do whole frame paintings along side plyometrics, which can be exceptional varieties of bounding and leaping to construct explosive force. To get greater at going for walks you ought to run. If you are employed on lifting and doing the plyometrics you are going to have the groundwork to upgrade your going for walks. What form of going for walks are you running for? If it's soccer then you definitely will have to coach for brief bursts of velocity. If it's one other game you have got to appear on the distances required on your game. A huge aspect of velocity it response. That manner the begin. Whether it's out of the blocks in a race, or attending to a fly ball within the outfield. Speed is vigor so that you ought to be ready to loosen up rise up tall, maintain your elbows at ninety levels, swing them directly entrance to again, and now not throughout your frame. Land at the balls of your ft.2. Water flows through a 1.5 cm diameter pipe into a 275 liter bathtub, which it fills in 5 minutes. What is the speed of the water in the pipe?Mass of 275 litres of Water divided by 5 minutes x 60 seconds = Time of 300 secondsMass Flow Rate of 0.9166 litres per secondThis is excessive amount of water in Speed or Velocity to fill a bathtub in 300 seconds. See IPHE & CIBSE CoP & Technical Guidance on maximum flow rate for 15 mm smooth wall copper pipework. The water pressure is another factor is consider.Water flows through a 1.5 cm diameter pipe into a 275 liter bathtub, which it fills in 5 minutes. What is the speed of the water in the pipe?.3. Not getting the download speed I should be getting?you download a file to what ? a phone or a computer? ethernet or wirelessly ? you need to be more clear on how to ask a question, even with my godlike powers i cant read your mind4. Need help gaining speed/trimming fat?challenging task. browse in google. that will may help!5. Why are people so insistent that speed of light is constant for all observers and is the maximum traveling speed?In special relativity, when the speed of light is constant for everyone, time can be different. When different travellers or observers have light remain constant, their time can change to allow for this. So try to wrap your head around the fact that different observers can have differences in time, and this allows the speed of light to remain constant for all observers.6. fur nice fan motor Polly have to be smaller to make the fan go faster?Motor pulley larger or driven pulley smaller will increase speed7. What are the technical factors in a processor that determine its speed?Clock Speed of the Processor and its primary cache size determines its speed in terms of throughput8. Is faster than the speed of light possible?well ist just a theory so it could be or couldnt be true.....einstien said if we could go the speed of light then we cold time travel...other people say it is still expanding....what i want to know is how can all of that crap fit into somthing the size of a pin head lol.9. How to train for faster picking speed on guitar?Assuming we are talking about alternate picking, there are basically two exercise methods for building speed.The first and the better known one is to start slow. Set your metronome to a comfortable tempo and play the exercise a few times. Then go up 2 bpms or so and repeat. Continue alternating between plus two and minus one. Back down some 10 bpm when you hit your limit and work your way up from there again. You can go up 10 bpm or so from time to time just to see how it feels. The second one is to practice in bursts. Start with two notes and play as fast as you can. Then add the third and continue from there. This method is not as well known as the first one but is every bit as useful. You can also start from the most difficult spot on the exercise and add notes on both sides.Practicing scales only is probably not the best way to go. There are specially crafted exercise sets to build speed that isolate common patterns. Troy Stetina's book Speed Mechanics contains one such set.In terms of technique, on your left hand, only apply enough pressure to avoid buzz. You will get tired very quickly if you exert more force than necessary. The lighter your left hand touch is, the easier it is to play fast. It's easier said than done but that's the whole idea of practicing.On your right hand, I would not worry that much about wrist vs. elbow unless you are aiming for Guiness speed record. Wrist movement is probably a bit better but there's nothing wrong with a combination of wrist and elbow. Guitarists argue about it all the time but there are superb guitarists in both camps which proves that both techniques are equally viable. Just avoid finger movement, it does not work for fast playing
What Is WiFi? Just Tell Me What It Is, and What It's Used For.?
What Is WiFi? Just Tell Me What It Is, and What It's Used For.?
Wi-Fi= wireless fidelity and what everyone else said1. i want to acess internet on my psp and my pc.i heard about this wifi link.i don't what a wifi is.plz help?you are not going to get free internet. if you want internet you have to pay for it. all Wi-Fi is, is you plugging a router into your internet connection, then the router transmits a signal.2. What WiFi router should I buy for my 800 SF apartment?Any wifi router provided by the internet provider will do and serve the purpose...An apartment area of 800 sq. ft is small enough which can easily be served by the company provided hardwares!You would not want to have a very strong signal that anyone outside your apartment can tap into!3. What is wifi and how do I know if my house has it?Wi-Fi is a wireless internet connection that things like laptops, wireless cards, and game systems use connect to the internet. If you do not have a wireless router, you do not have Wi-Fi4. What Wifi usb Adpter Is Better?Neither, they are both low quality. Buy from a reputable brand5. what is wifi actually? how does it works?it's a wireless connection. you can connect any computing device as long as you have a wireless nic enabled on that certain device. to access the internet you need to be in a "hotspot" that's the place where you can get your signal to connect to the internet6. How can I find out what Wifi networks my iPhone knows about?I think the only way is to actually be in range of the network that you want to get rid of. You can not actually see what networks you have stored, not that I know of, but if you want to get rid of a network.Settings > Wifi > Then select the blue arrow on the right of the network that you are connected to and click "Forget this Network".7. How do I find out what wifi chipset my phone has?I simply used the dmesg command in a terminal emulator and scrolled until I found anything named bcm432x... and wlan. Think thats it. I have lg p5008. I'm not entirely sure what WiFi is?Have a look at the wikipedia article. Usually you would get a DSL connection and set up your wireless network at home. The wireless network connection is also called W-LAN or WiFi, but in this context, WiFi has nothing to do with the ISP. Not sure if in your region any provider sells internet acces via WiFi, this is not a common thing to do.9. What is wifi and what does it do for a phone?If you have internet at home and have a wireless router you can connect wirelessly to it and get on the internet etc. on your phone. Hope this helps!10. 802.11 standards compliant methods of forming a LAN. Unlike Ethernet, data does not travel along a cable, but rather, wirelessly, at a frequency of 2.4GHz (802.11b/g) or 5.0GHz (802.11n and the antiquated 802.11a)11. What is "WiFi" and can you explain ,more about it? I'm GOnna buy a laptop.?well if you want wifi in your home you have to have an internet connection threw a modem..ex comcast, qwest, at&t. you will need to purchase a wireless router, its just another device that hooks into your modem. so no it is not free, but it is a one time charge because your ISP will not charge you to have the wireless router hooked up...and where you can use it is in your home. you can also connect to wifi at places like starbucks, and that is free as well.12. What WiFi router brands or models are considered to be secure? [closed]For cheap solution I use a wifi router well supported by dd-wrt alternative firmware. Here you can find supported models database.For more advanced, trouble-safe solution I use Ubiquiti UniFi - the AC-Lite model is really good.13. What is a bluetooth? what is WIFI? And what is a BLU RAY DVD?Bluetooth is a wireless technology for connecting electronic devices to each other. For instance there are Bluetooth Headphones, Bluetooth Cell Phone Ear Pieces, etc... If you want to be able to use the Bluetooth Ear Pieces with your cellphone, your cellphone must be Bluetooth compatible. WiFi is a method of connecting to the internet wirelessly. For instance many big cities may have "WiFi Hotspots". If you are in these WiFi Hotspots and you have your laptop or any other device that can connect to the internet wirelessly, you can surf the web wirelessly as long as you are in that particular area. And Blu-Ray is Sony's High Definition format disc. The difference between Blu-Ray and Regular DVD is that Blu-Ray can produce 1080p HD quality picture and Blu-Ray can hold more data. A Single Layer Blu-Ray disc can hold 25GB and a Dual Layer DVD can hold 50GB. A standard DVD can only hold around 8.5GB total. Basically if you have a HDTV, Blu-Ray would be the best choice for getting the best picture quality with clear, crisp viewing quality.
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