The degree of hotness or coolness of a body is measured by its temperature. The higher the temperature, the hotter the body.
Kelvin is the SI unit of temperature (\(K\)). Celsius (\(°C\)) is used in everyday applications. A thermometer is used to determine the temperature.
There are three temperature scales, they are
- Fahrenheit scale
- Celsius or Centigrade scale
- Absolute scale or Kelvin scale
The freezing and boiling points in Fahrenheit are \(32\) degrees Fahrenheit and \(212\) degrees Fahrenheit, respectively. The interval has been broken down into \(180\) segments.
The freezing and boiling points on the Celsius scale (also known as the centigrade scale) are \(0°C\) and \(100°C\), respectively. The interval has been broken down into \(100\) pieces.
The formula to convert a Celsius scale to Fahrenheit scale is:
The formula for converting a Fahrenheit scale to Celsius scale is:
Kelvin scale(Absolute scale):
Kelvin scale is also known as the absolute scale. Absolute zero, or \(0\) \(K\) on the Kelvin scale, is the temperature at which a substance's molecules have the lowest possible energy. At \(273.16\) \(K\), the solid, liquid, and gaseous phases of water can coexist in equilibrium.
Kelvin is defined as \(1/273.16\) of the triple point temperature.
The formula for converting a Celsius scale to a Kelvin scale is: