International Temperature Scale of 1990 value may then be converted to, and expressed as, a value on the Fahrenheit scale (e.g. 211.953 °F). ITS–90 does not address the highly specialized equipment and procedures used for measuring temperatures extremely close to absolute zero. For instance, to measure temperatures in the nanokelvin range (billionths of a kelvin), scientists using optical lattice laser equipment to adiabatically cool atoms, turn off the entrapment lasers and simply measure how far the atoms drift over time to measure their temperature. A cesium atom with a velocity of 7 mm/s is equivalent to a temperature of about 700 nK (which was a
Absolute Zero (novel) Absolute Zero (novel) Absolute Zero is a 1978 children's novel by Helen Cresswell, the second book in the Bagthorpe Saga. The Bagthorpe Saga follows the lives of the Bagthorpe family, who live in Unicorn House in an unspecified part of the United Kingdom. The nearest large settlement is the (presumably) fictional town of Aysham. Jack Bagthorpe is the protagonist with his dog Zero. Jack's family become involved in entering competitions. Uncle Parker has won a trip to the Caribbean in a caption contest. In typical Bagthorpian style, the rest of the family immediately enter similar competitions in an attempt to