One of the mysteries of the English language finally explained.
1One that employs a crystal diode to rectify a high-frequency current, or to produce an audio signal from a radio signal.
2One used as a scintillation detector of X-rays or gamma rays.
Early 20th century; earliest use found in Ambrose Fleming (1849–1945), electrical engineer and university teacher.
In this article we explore how to impress employers with a spot-on CV.