Lazer Nasıl Çalışır? Einstein'ın 1916'da Bulduğu Sır | Feynman Açıklıyor

In 1916, while examining Planck's radiation equation on a piece of paper, Einstein realized that for the equation to be correct, there had to be an unknown interaction between light and the atom. He wrote down that interaction. He called it "stimulated emission." 44 years later, in 1960, Theodore Maiman produced a red beam of light from a ruby ​​crystal. The world's first laser. And everything inside that laser was based on a few equations Einstein had written down in 1916. In this video, based on the account of Nobel laureate physicist Richard Feynman, we discuss Einstein's laws of radiation, the working principle of the laser, and how this discovery remained unexplored on paper for 44 years, in simple, formula-free language. SOURCE Richard Feynman — Feynman Lectures on Physics Volume 1, Chapter 42: Applications of Kinetic Theory — Einstein's Laws of Radiation. Turkish edition: Alfa Publications. HOW WAS THE CONTENT PREPARED? By reading the entire chapter, Feynman's original account of Einstein's laws of radiation, the historical context, and intuitive explanations were identified. Heavy mathematics and formulas were deliberately omitted; our aim was to translate Feynman's profound physics intuition into a language everyone can understand. #HowLasersWork #Einstein #Feynman #PhysicsLectures #ScienceInTurkish #FeynmanPhysicsLectures #StimulatedBroadcasting #QuantumPhysics