Sound amplification by stimulated emission of radiation the axes of the mirrors, it is possible for photons to repeat multiple reflections and force more and more photons to follow them producing an avalanche effect. The number of photons of this coherent laser beam increases and competes the number of photons perished due to losses. The basic necessary condition for the generation of a laser radiation is the population inversion, which can be achieved either by exciting atoms and inducing percussion or by external radiation absorption. A SASER device mimics this procedure using a source-pump to induce a sound beam of phonons. This sound beam propagates not in
A Web of Sound A Web of Sound A Web of Sound is the second album by the American garage rock band the Seeds. Produced by Marcus Tybalt and released in October 1966, it contained the single "Mr. Farmer" and the 14-minute closing song "Up In Her Room". The album did not chart, though it has received generally favorable reviews from music critics. Lead singer Sky Saxon conceptualized the album's cover design depicting the four Seeds members trapped in a spider's web. "A Web of Sound" was produced by Saxon under the pseudonym Marcus Tybalt; Saxon also wrote or co-wrote all of the songs