#AtoZChallenge: April 13 – L is for LASER

“A laser is a device that emits light (electromagnetic radiation) through a process of optical amplification based on the stimulated emission of photons. The term "laser" originated as an acronym for Light Amplification by Stimulated Emission of Radiation.[1][2] The emitted laser light is notable for its high degree of spatial and temporal coherence, unattainable using … Continue reading #AtoZChallenge: April 13 – L is for LASER