Sound amplification by stimulated emission of radiation of a coherent amplification of THz sound. The THz stimulated phonon induced transitions between the electron superlattice states lead to this coherent amplification while processing a population inversion. An essential step towards coherent generation ("sasing") of THz sound and other active hypersound devices has been provided by this achievement of THz sound amplification. Generally, in a device where the threshold for "sasing" is achieved, the technique described by this proposed scheme could be used to measure the coherence time of the emitted hypersound. Sound amplification by stimulated emission of radiation Sound amplification by stimulated emission of radiation (SASER) refers to
A Sound Like Someone Trying Not to Make a Sound confront their fears." Liz Rosenburg, reviewing for the "Boston Globe" concluded, "It may not be for everyone, certainly not for the most timid, but it has a satisfying and haunted originality that will win its own fans." A Sound Like Someone Trying Not to Make a Sound A Sound Like Someone Trying Not to Make a Sound (Doubleday Books for Young Readers, September 28, 2004, ) is a children's picture book written by John Irving and illustrated by Tatjana Hauptmann. The title was originally used for a children's book written by a fictional character (Ted Cole) in Irving's 1998 novel