T-ray

== English == === Etymology === Initialism of t(erahertz) + ray, modelled after X-ray. The term was coined in Bell Labs in the United States in the mid-1990s. === Pronunciation === (Received Pronunciation) IPA(key): /ˈtiːˌɹeɪ/ (General American) IPA(key): /ˈtiˌɹeɪ/ === Noun === T-ray (plural T-rays) (electrical engineering, electromagnetism, also attributive, chiefly in the plural) An electromagnetic wave with a frequency intermediate between, and sharing the properties of, short radio waves and long infrared waves, generally in the 0.1 to 10 terahertz (THz) band of frequencies. [from mid 1990s] Synonym: T-wave Hypernyms: submillimeter wave radiation, terahertz radiation, tremendously high frequency ==== Usage notes ==== The International Telecommunication Union designates terahertz radiation to be in the 0.1 to 10 THz range, though some sources regard radiation up to 30 THz to be T-rays as well. In older works, the range was from 0.3 to 3 THz (now called decimillimetric waves). ==== Translations ==== === References === === Further reading === terahertz radiation on Wikipedia.Wikipedia === Anagrams === Arty, arty