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Saturday, March 14, 2009

HowStuffWorks Videos "Invention Nation: Solar Panels"

Invention Nation: Solar Panels
Related Article: Learn more about solar panels.
Take a closer look at the technology used to build solar panels. Learn
more about solar cells in this video.

http://videos.howstuffworks.com/science-channel/5015-invention-nation-solar-panels-video.htm

Yo­u have probably also been hearing about the "solar revolution" for
the last 20 years -- the idea that one day we will all use free
electricity fro­m the sun. This is a seductive promise: On a bright,
sunny day, the sun shines approximately 1,000 watts of energy per square
meter of the planet's surface, and if we could collect all of that
energy we could easily power our homes and offices for free.

­In this article­, we will examine solar cells to learn how they convert
the sun's energy directly into electricity. In the process, you will
learn why we are getting closer to using the sun's energy on a daily
basis, and why we still have more research to ­do before the process
becomes cost effective.

http://science.howstuffworks.com/solar-cell.htm


Don

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