Sound amplification by stimulated emission of radiation mechanism and an active medium. The pumping procedure can be induced for example by an alternating electric field or with some mechanical vibrations of resonators, followed by acoustic amplification in the active medium. The fact that a SASER operates on principles remarkably similar to a laser, can lead to an easier way of understanding the relevant operation circumstances. Instead of a feedback-built potent wave of electromagnetic radiation, a SASER delivers a potent sound wave. Some methods for sound amplification of GHz-THz have been proposed so far. Some have been explored only theoretically and others have been explored in non-coherent experiments.
Sound of a Living Heart Sound of a Living Heart Sound of a Living Heart is tenth studio album by JJ Heller. Stone Table Records alongside Sparrow Records released the album on August 21, 2015. Kevin Sparkman, indicating in a three and a half star review for "CCM Magazine", describes, "Heller continues her proven formula of innocent melodies, heart moving lyrics, and inviting musical moments." Awarding the album four stars from Jesus Freak Hideout, Mark D. Geil states, ""Sound of a Living Heart" is an encouraging sign of a continued upward trajectory." Jay Heilman, reviewing the album for Christian Music Review, writes, he's "highly impressed..."Sound