Is there anyway to know how much powerful a laser is?without a laser power meter.How much strong blue laser when focused properly can burn a hole in wooden log after few min?Also will the power of the laser decrease overtime?
Without a speedometer you can not know the speed
of the car by wetting your finger and holding it out
the window.
Just like you need a Laser Power Meter to know the
actual power of a Laser's beam.
Is there anyway to know how much powerful a laser is?without a laser power meter.How much strong blue laser when focused properly can burn a hole in wooden log after few min?Also will the power of the laser decrease overtime?