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1. ASP: Astrophysics for a Ten-Year-Old Mind
A joule expended continuously for one second is a watt, which means a liter of water, converted to energy could power a 1 watt light bulb for 9 • 1016 seconds, or 2.5 • 1013 hours. ... What would happen if you turned all those light bulbs on for two and a half hours? ... One joule is equal to about four food calories. ... Minding Your Joules . ... Energy is given in joules and not many kids know what a joule is. ... one estimate gives the energy yield of the Big Bang as 10 68 joules . ...
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Ссылки http://www.astrosociety.org/edu/publications/tnl/43/astromind3.html -- 11.0 Кб -- 02.10.2012
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