User:KYPark/1917

Albert Einstein

 * Zur Quantentheorie der Strahlung
 * (On the Quantum Mechanics of Radiation)
 * Physikalische Zeitschrift 18: 121–128


 * ``In 1917 Albert Einstein, in his paper [...], laid the foundation for the invention of the laser and its predecessor, the maser [...].`` -- Laser
 * ``Before stimulated emission was discovered, novelists used to describe machines that we can identify as "lasers".
 * The first fictional device similar to a military CO2 laser (see Heat-Ray) appears in the sci-fi novel The War of the Worlds by H. G. Wells in 1898.`` -- Laser