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
Homologous temperature values for tensile strength, shear strength and modulus of elasticity. Copper, on the other hand, has a much higher melting point, so foils are working at only 0.16T to 0.29T and their properties are little affected by temperature. Homologous temperature Homologous temperature expresses the temperature of a material as a fraction of its melting point temperature using the Kelvin scale: formula_1 For example, the homologous temperature of lead at room temperature (25 °C) is approximately 0.50 (T = T/T = 298 K/601 K = 0.50). The homologous temperature of a substance is useful for determining the rate of steady state