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what is used in solar light and light meters because it conducts electricty when exposed to light?

Question by wes09: what is used in solar light and light meters because it conducts electricty when exposed to light?

Best answer:

Answer by Outside of a Book…
There are CdS and CdSE cells that conduct electricity when exposed to light.

http://www.circuitstoday.com/photoconductive-cells

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