1) What do you mean by temperature a
state the SI unit of temperature?
Answers
Temperature is known as the degree of hotness or coldness of a body.
S.I. unit- Kelvin denoted by K.
Explanation:
Temperature (symbolized T ) is an expression of heat energy. Temperature can mean different things in different situations.
Thermodynamic temperature is a measure of the kinetic energy in molecules or atom s of a substance. The greater this energy, the faster the particles are moving, and the higher the reading an instrument will render. This is the method lay people most often use.
Spectral temperature is defined according to the wavelength at which the electromagnetic (EM) energy that an object emits is greatest. The shorter the wavelength, the higher the frequency of maximum EM energy, and the higher the spectral temperature. This is the temperature scheme that astronomers use to measure the heat in distant objects such as the sun's corona or the gas and dust between stars.
There are three temperature scales in common use today: kelvin (K), centigrade or Celsius (C), and Fahrenheit (F). A fourth scale, known as the Rankine (R) temperature scale, is less often used. The kelvin is the unit of temperature in the International System of Units ( SI ).
One kelvin is formally defined as 1/273.16 (3.6609 x 10 -3 ) of the thermodynamic temperature of the triple point of pure water (H 2 O). A temperature of 0 K represents absolute zero, the absence of all heat.