Human devices, from light bulbs to iPods, send information using electrons. Human bodies and all other living things, on the other hand, send signals and perform work using ions or protons.
General Physics
Sep 20, 2011
26
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As simple as it sounds, a one-liter plastic bottle filled with purified water and some bleach could serve as a light bulb for some of the millions of people who live without electricity. Originally developed by MIT students, ...
All of us use water and in the process, a lot of it goes to waste. Whether it goes down drains, sewers or toilets, much of it ends up at a wastewater treatment plant where it undergoes rigorous cleaning before it flows back ...
Energy & Green Tech
Aug 22, 2011
1
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Zimbabwe's electricity authority is to hand out 5.5 million energy-saving flourescent bulbs to its consumers in a bid to curb consumption, a state daily newspaper reported Monday.
Energy & Green Tech
Aug 15, 2011
9
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So, how many members of Congress does it take to screw up a light bulb?
Energy & Green Tech
Jul 22, 2011
66
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The House of Representatives gave extended life to the 100-watt bulb Friday, voting to delay a ban on sales of the incandescent bulb for nine months, from Jan. 1 to the end of the fiscal year, Sept. 30, 2012.
Energy & Green Tech
Jul 16, 2011
227
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With the United States' phase-out of conventional incandescent light bulbs set to start in a few months, an article in the current edition of Chemical & Engineering News (C&EN) describes how the ban on 100-watt bulbs portends ...
Engineering
Jul 13, 2011
1
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Once broken, a compact fluorescent light bulb continuously releases mercury vapor into the air for weeks to months, and the total amount can exceed safe human exposure levels in a poorly ventilated room, according to study ...
Environment
Jul 6, 2011
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With a January deadline looming on a US law mandating energy efficiency standards for lightbulbs, some political forces don't want to turn out the lights.
Energy & Green Tech
Jun 26, 2011
89
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When semiconductor nanorods are exposed to light, they blink in a seemingly random pattern. By clustering nanorods together, physicists at the University of Pennsylvania have shown that their combined "on" time is increased ...
Nanophysics
Jun 23, 2011
0
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