They both have same magnitude and if we add
273.15 to the celsius scale then we can obtain the Kelvin scale temperature.

Relation between Celsius and Kelvin scale:

The Celsius and Kelvin scales are two commonly used temperature scales. The Celsius scale is used in everyday life, while the Kelvin scale is used in scientific research and calculations. Both scales are related to each other through a simple mathematical formula.

Conversion Formula:
To convert a temperature from Celsius to Kelvin, we use the following formula:

K = C + 273.15

Where:
- K represents the temperature in Kelvin
- C represents the temperature in Celsius

This formula states that to convert a temperature from Celsius to Kelvin, we need to add 273.15 to the Celsius value.

Explanation:
- The Celsius scale is based on the concept of dividing the range between the freezing and boiling points of water into 100 equal intervals. The freezing point of water is defined as 0 degrees Celsius (0°C), and the boiling point of water is defined as 100 degrees Celsius (100°C) at standard atmospheric pressure.
- On the other hand, the Kelvin scale is an absolute temperature scale that starts from absolute zero, which is the lowest possible temperature. Absolute zero is defined as 0 Kelvin (0K), and it corresponds to -273.15 degrees Celsius (-273.15°C).
- The reason for adding 273.15 to the Celsius value when converting to Kelvin is to account for the difference in the starting points of the two scales. By adding 273.15, we align the zero points of both scales.
- Therefore, any temperature measured in degrees Celsius can be converted to Kelvin by simply adding 273.15 to the Celsius value. Similarly, to convert a temperature from Kelvin to Celsius, we subtract 273.15 from the Kelvin value.

Example:
Let's say we have a temperature of 25 degrees Celsius (25°C). To convert this temperature to Kelvin, we use the conversion formula:

K = 25 + 273.15
K ≈ 298.15 Kelvin

So, 25 degrees Celsius is approximately equal to 298.15 Kelvin.

Summary:
In summary, the Celsius and Kelvin scales are related by a simple conversion formula. To convert a temperature from Celsius to Kelvin, we add 273.15 to the Celsius value. This conversion allows us to easily convert temperatures between the two scales and is particularly useful in scientific calculations and research.