"Thermostats" Natural Recordings by Native Speakers
A device for regulating the temperature of a system, used in heating and air-conditioning systems, refrigerators, etc., by controlling the flow of heat or cold according to a set point to maintain a stable temperature.
The thermosphere is a layer of the atmosphere that extends from approximately 85 to 600 kilometers (53 to 373 miles) altitude. It is the fourth layer of the atmosphere, covering the mesosphere and stratosphere. The thermosphere is characterized by a significant increase in temperature with altitude, due to absorption of ultraviolet radiation from the sun, which causes ionization and excitation of atmospheric particles.