Nov 6, 2010 #1 I ixfd64 0 Joined Sep 12, 2007 Messages 1,182 Points 48 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.
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.
Nov 6, 2010 #2 kiyoukan 0 Joined Oct 24, 2009 Messages 2,555 Points 48 Well if you focus a 1.5w laser it lights candles and burn white paper. If that helps
