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Q & A: Light & Humans

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Most recent answer: 10/22/2007
Q:
I am doing a report on light energy and I had a few questions. First, how does light energy affect people in a positive way? Next, Could you give me an example for a presentation on this.
- David
Brier Terrace Middle, Brier, WA, USA
A:
Light is very important to humans...the sun rising and setting defines the daily cycle that our bodies repend on. In addition, our very existance depends on the sun since it (among other things) warms us and provides the energy for plants to grow.

I good demo might be to show how solar cells turn light into electricity.

(published on 10/22/2007)

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