What is an absolute scale?
The temperature is energy measurement, with higher temperatures showing greater movement of molecules or kinetic energy. Common scale include Fahrenheit and Celsius, each of which has a known number of degrees or additions between freezing and boiling of water. Absolute scale does not use the same reference point, but is based on zero as a theoretical value where molecules do not have kinetic energy. Some scientists believe that absolute zero can never be achieved because there is no way to measure it as a calculated value. On its Celsius scale, the water freezes at 0 ° C and boils at 100 ° C. Kelvin calculated that the absolute low temperature limit is approximately -273 ° C, which calls a zero point of its scale. Its scale used the same temperature increases as Celsius Scale and was named after the Kelvin scale.
William Rankine designed an absolute scale based on fahrenheite rather than on the Celsius system at the age of 20. On this scale, water freezes at 32 ° F and boilsAt 212 ° F. He set up at the same theoretical zero point as Kelvin, which is approximately -459 ° F, and this is called rankine scale.
Absolute scale temperature defines the movement of molecules rather than measuring thermal energy. As the energy in the gas increases or decreases, the pressure changes for gases maintained in a closed container. Determination of gases includes temperature and pressures measurement compared to known standard values, with absolute zero as a reference. These properties may be important for analyzing a mixture of gas or properties of gases or other materials at cryogenic or extremely low temperatures.
Another property of the materials is to hesitate to hesitate. It is a temperature and pressure where the material can exist in all three phases; Fixed, gas and liquid. An example of a triple point is water that has a triple point at 273 ° K, which is the same as its normal freezing point 32 ° F or 0 ° C. ItIt explains how frost can form on cold nights, because water molecules under certain conditions can move directly from the gas state to solid or vice versa.
The process of transition from the solids directly to the gas is called sublimation. Ice cubes that slowly disappear into the freezer sublimize water directly on the steam of solid ice. Another common chemical that sublimates is dry ice or frozen carbon dioxide, which changes directly from the solid to gas without melting. This feature can be useful for industrial processes or low temperature cooling where liquids could cause handling problems.
Many substances have very low triple point temperatures, which is an important absolute measure for measuring. Gases for industrial purposes require very low temperatures, often measured absolutely. Gases such as helium have a triple point very close to absolute zero, which is useful as a reference to other gases.