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power needed to ignite newspapers and candle wicks?

ixfd64

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Does anyone have an idea of how much optical power is needed to light candles or set newspaper on fire? Assume that the laser has a beam diameter of 1.5 mm.
 

kiyoukan

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Oct 24, 2009
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Well if you focus a 1.5w laser it lights candles and burn white paper.
If that helps
 




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