7 Up can still be found in several Southeast Asian countries such as Singapore. 7 Up Free: 7 Up Free is sold in Iceland, UK, Ireland, Spain, Norway, Argentina, Finland, UAE, Uruguay, Pakistan, and the Netherlands. It contains no caffeine, sugar, colorings, or preservatives, and is marketed as "Natural Lemon and Lime Flavour" similar to the "100% natural" American version. It contains a combination of artificial sugars, and for eight years was the only variety on the Norwegian market. The lack of the usual light or zero-label is confusing to Norwegian consumers, who often buy it not knowing they are buying a
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