To surrender or relinquish, as sovereign power; to withdraw definitely from filling or exercising, as a high office, station, dignity; as, to abdicate the throne, the crown, the papacy. [imp. & p. p. Abdicated ( ); p. pr.
History of IR and FTIR spectroscopy. Chemical IR spectroscopy was emerged as a science in 1800 by Sir William Herschel. Firstly most IR instrumentation was based on prism or grating monochromators. Michelson invented interferometer in 1881.
A much more modern version of the sauna idea is the electric light near infrared lamp sauna. John Harvey Kellogg, MD of Michigan is credited with its invention about 100 years ago. The electric light bulb had just been invented by Thomas Edison. Early units made use of 40 small regular bulbs.