7 Up up with the formula for a lemon-lime soft drink in 1929. The product, originally named "Bib-Label Lithiated Lemon-Lime Soda", was launched two weeks before the Wall Street Crash of 1929. It contained lithium citrate, a mood-stabilizing drug, until 1948. It was one of a number of patent medicine products popular in the late-19th and early-20th centuries. Its name was later shortened to "7 Up Lithiated Lemon Soda" before being further shortened to just "7 Up" by 1936. A myth exists that the 7 Up name comes from the drink having a pH over 7. That would make it neutral or
SPRITE infrared detector SPRITE infrared detector The SPRITE infrared detector is named after the process of signal integration carried out by "Signal Processing In The Element". The technique was invented at the Royal Signals and Radar Establishment at Malvern by a team of scientists including Tom Elliott. The detector allows the build up of detected infrared signal in a mercury cadmium telluride (MCT) photoconductor strip, on a sapphire substrate, by applying a bias current through the strip. The detector is used in a scanned thermal imager and the bias voltage is adjusted to force electrons produced by the detected energy at one end