Sound amplification by stimulated emission of radiation of the laser. In a SASER device, a source (e.g., an electric field as a pump) produces sound waves (lattice vibrations, phonons) that travel through an active medium. In this active medium, a stimulated emission of phonons leads to amplification of the sound waves, resulting in a sound beam coming out of the device. The sound wave beams emitted from such devices are highly coherent. The first successful SASERs were developed in 2009. Instead of a feedback-built wave of electromagnetic radiation (i.e., a laser beam), a SASER delivers a sound wave. SASER may also be referred to as "phonon laser",
A Changed Man and Other Tales to be sold in October 1913. A Changed Man and Other Tales A Changed Man and Other Tales is a collection of twelve tales written by Thomas Hardy. The collection was originally published in book form in 1913, although all of the tales had been previously published in newspapers or magazines from 1881 to 1900. There are eleven short stories and a novella "The Romantic Adventures of a Milkmaid". At the end of the book there is a map of the imaginary Wessex of Hardy's novels and poems. Six of the stories were published before 1891 and therefore lacked international