Some articles on atr, atr crystal:
... Attenuated total reflectance (ATR) is a sampling technique used in conjunction with infrared spectroscopy which enables samples to be examined directly in the ... ATR uses a property of total internal reflection resulting in an evanescent wave ... A beam of infrared light is passed through the ATR crystal in such a way that it reflects at least once off the internal surface in contact with the sample ...
Famous quotes containing the word crystal:
“If Los Angeles has been called the capital of crackpots and the metropolis of isms, the native Angeleno can not fairly attribute all of the citys idiosyncrasies to the newcomerat least not so long as he consults the crystal ball for guidance in his business dealings and his wife goes shopping downtown in beach pajamas.”
—For the State of California, U.S. public relief program (1935-1943)