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",
Not a Damn Thing Changed tribute to one of the guys I grew up with who hung himself in January. He was three months older than me and we walked through life together." A music video to accompany the release of "Not a Damn Thing Changed" was first released on YouTube on 11 October 2018 at a total length of three minutes and forty-nine seconds. The video was directed by René Sascha Johannsen. Forchhammer's real-life childhood friends appear in the video, which they filmed in Copenhagen and their hometown, Christiania. Not a Damn Thing Changed "Not a Damn Thing Changed" is a song by Danish