D doughboyOP14 Oct 2010 · 22:18 UTC #1 How long does a laser last before it dies? Does it have to do with how powerful the laser is, or does it have to do how well you take care of it?
A Arcwolf0914 Oct 2010 · 22:32 UTC #2 A cocentrated laser will go on for infinty, Because of law of conservation of Energy. Just as light does.