Celsius Celsius The Celsius scale, also known as the centigrade scale, is a temperature scale used by the International System of Units (SI). As an SI derived unit, it is used by all countries except the United States, the Bahamas, Belize, the Cayman Islands and Liberia. It is named after the Swedish astronomer Anders Celsius (1701–1744), who developed a similar temperature scale. The degree Celsius (°C) can refer to a specific temperature on the Celsius scale or a unit to indicate a difference between two temperatures or an uncertainty. Before being renamed to honor Anders Celsius in 1948, the unit was
George Bishop (astronomer) George Bishop (astronomer) George Bishop (Leicester, 21 August 1785 – 14 June 1861), was a noted English astronomer of the nineteenth century. At the age of eighteen Bishop entered a British wine-making business in London, subsequently becoming its proprietor, during his tenure at which the business was so successful that its excise returns were said to exhibit half of all home-made wines as of his manufacture. Bishop's scientific career began with his admission to the Royal Astronomical Society in 1830, funded by the money he had earned from the wine business. He took lessons in algebra from Augustus De Morgan,