Word: maiman
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
...they can read CDs, remove tattoos and repair detached retinas. But in 1960, when physicist Theodore Maiman unveiled the first working laser at a New York City news conference, only a few grasped the device's potential. The trick to creating the tiny, potent pink force that won him world fame: selecting as his medium synthetic rubies, which had been dismissed by many scientists, and using pulsing, rather than continuous, light...
...Laser Long before the laser was invented, Albert Einstein reckoned that excited molecules hit by photons would produce an amplified signal. In 1960 Theodore Maiman built the first working laser (short for light amplification by stimulated emission of radiation), a coherent beam of electromagnetic energy produced by light waves traveling the same path. Today the devices are ubiquitous: guiding rockets for the military, cutting steel, unclogging arteries in the O.R.--and playing your favorite Radiohead...
...physicist Theodore Maiman builds a working laser...
Then for a while, optimism faded. Practical uses for the new source of light, which scientists christened laser (for light amplification by stimulated emission of radiation), proved to be both scarce and elusive. Physicist Theodore Maiman, an early laser pioneer, described the new light source as "a solution seeking a problem." He was understandably impatient, but problem after problem has since been found- in ever increasing numbers. And the versatile laser is beginning to solve those problems in a manner that more than justifies the early, expansive claims. Lasers have become a $300 million-a-year business. As they...
Just two years later, Physicist Maiman used the Townes-Schawlow theory and built the world's first working laser, a small, hand-held instrument that shot out bursts of brilliant red light. Instead of a gas, Maiman's laser used a synthetic ruby crystal grown in a bath of molten aluminum oxide. In pure form, the aluminum oxide crystal is colorless and transparent. But a pinch of chromium added to the bath as an impurity gives the resulting crystals their characteristic ruby-red hue and supplies the chromium atoms (one for every 5,000 aluminum atoms) that cause...