How do you store electrical energy from the source?

June 2, 2010 by admin · 1 Comment
Filed under: Engineering 
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Jay asked:


What type of device will allow you to put electrical energy from the electrical source to a battery? Let’s take an example that you are probably familar with-the fur and rod example. If I rub the two together I get an electrical charge. Now, what would I attach to the rod and fur and what device would be able to put that electrical energy into a battery?
Example 2-How do you store the energy that is being made from a mechanical device? If you know of specific products please list them.

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How much does a battery weigh that can store a million joules of energy?

June 2, 2010 by admin · 5 Comments
Filed under: Engineering 
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jim m asked:


If a good energy storage system was available electric cars would be a lot more useful. Batteries do store energy so how much do they weigh per megajoule of storage?

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How can you store electricity made with a simple electric generator?

April 7, 2010 by admin · 2 Comments
Filed under: Engineering 
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Raya I asked:


I have made a simple electric generator– cardboard box with gar magnets inside, wraped on copper wire. Is it possible to store that energy in something? Maybe rechargeable batteries?

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What is a good brick and mortar store in Toronto to buy electronic components?

January 27, 2010 by admin · 1 Comment
Filed under: Engineering 
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Gustavo asked:


I’m looking for a store to buy micro controllers, IC’s, servo motors, nothing too fancy. Is there a good store for electronic students? Digikey and other online stores aren’t an option.

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How can you build a windmill with office supplies?

July 27, 2009 by admin · 5 Comments
Filed under: Engineering 
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Gina S asked:


for a school project i have to build a windmill model with office supplies

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How much memory is needed to store a black and white photo with resolution 1024×512 if we use 32 gray levels?

July 10, 2009 by admin · 2 Comments
Filed under: Engineering 
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ms c asked:


How much memory is needed to store a black and white photo with resolution 1024×512 if we use 32 gray levels?

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How to store energy from a wind turbine?

June 28, 2009 by admin · 1 Comment
Filed under: Engineering 
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Witot asked:


I have a small wind turbine, and i was just wondering, how would i store the energy for later use? Every time i connect it to a battery, the turbine starts spinning, and the battery gets used up. Can you please tell me how to store the energy from the turbine? Thanks.

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How can i store electrical energy into a rechargeable battery?

April 17, 2009 by admin · 2 Comments
Filed under: Engineering 
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Lalaloveit!?! asked:


For a science project I’m trying to figure out how to collect sound and turn it into electrical energy we can use. So once i collect this energy how can i store it into a battery?

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Where can I purchase a magnifying glass or a handheld magnifier?

March 4, 2009 by admin · 4 Comments
Filed under: Engineering 
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Steve asked:


I heed to buy a handheld magnifying glass or a handheld magnifier. I don’t want to buy one online. I just want to walk into a store a buy one. I’m in the metro Detroit area. I need one with a minimum magnification of 30x. It’s ok if it’s a bit stronger around 50x. It wood be nice if I can get one that I could adjust some how.

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