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Biology Forums Blog |
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2651 |
ehd123 |
8 years ago |
How physics textbooks should teach electricity
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Everything is easily explained with cartoons or a childrens book. That is why we do it for children, but apparently adults need it too, that is why we have comics and video games. I found the analogy portrayed above perfect in explaining how voltage and current relate.
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Biology Forums Blog |
1 |
8740 |
duddy |
8 years ago |
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Biology Forums Blog |
1 |
12987 |
duddy |
8 years ago |
What do sounds look like?
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In this video, sand is sprinkled onto a metal plate attached to a speaker, which is then turned up the to bring the whole thing to life in a pulsating, dance of intricate patterns.
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Biology Forums Blog |
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15476 |
duddy |
9 years ago |
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Biology Forums Blog |
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12941 |
duddy |
9 years ago |
A new and creative way to focus energy
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This weather-tracking glass sphere can concentrate sunlight up to 10,000 times, and generate electricity even on a cloudy day. According to its researchers, this solar-harvesting device is 35% more efficient than traditional flat panels. It also looks really good.
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Biology Forums Blog |
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5326 |
savio |
9 years ago |
Did you know that bees and flowers communicate using electric fields?
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Researchers discover that bees and flowers communicate using electric fields. "It turns out flowers have a slight negative charge relative to the air around them. Bumblebees have a charge, too. The plant's electric field is changed by the proximity of that positively charged bee. And once the bee leaves, the field stays changed for 100 seconds or so. That's long enough for the altered field to serve as a warning for the next bee that buzzes by. She won't stop to investigate a flower that's already been visited." ...
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Biology Forums Blog |
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5145 |
duddy |
9 years ago |
China is physically slowing the earth down
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The last 32 generators of the controversial dam were switched on at the end of July last year, and the gushing water that resulted could generate about 22,500 megawatts of energy, and even slowed down the Earth's rotation. But there's no reason to panic, Earth's rotation changes frequently.
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Biology Forums Blog |
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3225 |
duddy |
10 years ago |
Solar panels on the moon could one day power Earth
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Architectural and engineering firm Shimizu plans to solve Earth's climate crisis by building a band of solar panels 400 kilometres wide along the entire 11,000-kilometre equator of the Moon. The energy generated will be beamed back to Earth in the form of microwaves and converted into electricity at ground stations. The team hopes to start building the "Luna Ring" from Moon materials in 2035.
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Biology Forums Blog |
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7367 |
duddy |
10 years ago |
House plants could one day power our computers
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Researchers have discovered a novel method to harness photosynthesis to create electricity. By attaching nanotubes to plant cells, the researchers were able to direct the electrons that plants free during photosynthesis down a wire and generate electrical current – and it was twice as powerful as electricity gathered from solar cells.
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Biology Forums Blog |
2 |
7670 |
duddy |
10 years ago |
Hydropower
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Nearly 20% of all electricity in the world comes from hydropower, and Norway has adapted to rely nearly entirely on it. They are the world leader in hydroelectricity production, generating 120 TWh annually. France and Sweden are next highest, each generating ~65 TWh per year.
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Biology Forums Blog |
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3086 |
duddy |
10 years ago |