Naked Science Forum
General Discussion & Feedback => Radio Show & Podcast Feedback => Topic started by: thedoc on 20/09/2014 15:32:14
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Use your chatterbox co-workers to power the entire office's electronics...
Read the whole story on our website by clicking here (http://www.thenakedscientists.com/HTML/news/news/1000562/)
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The fact that the inventors call themselves scientists is beyond comprehension. The law of conservation of energy is fundamental to every science.
The human body is one of the least efficient energy converters imaginable. You consume about 10 megajoules per day from food, and the average human can at best do about 360 kJ of useful work in a day - 3.6% conversion efficiency. So if you need another 100W of electricity to power your computer for an 8 hour day, you will need to eat another 80 megajoules (19,000 Calories) of food. Alas, there isn't enough food in the world to do this - most people are living on less than a tenth of that amount already.
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I guess the point is that they want to power hearing aids, so this looks more like 1mW power rather 100W. Just a few order of magnitudes below what you mention, alcancalverd.