a laser beam of 0.2 watt power can drill holes through a metal sheet whereas a 1000 watt torch light cannot.Why?
a laser beam of 0.2 watt power can drill holes through a metal sheet whereas a 1000 watt torch light cannot.Why?
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this is due to the phenomena of coherence ..in laser light is emited in phase meaning constrctive interfence of waves of photon leading to the increase in amplitude which is directly proportional to the intensity of light ..