[Physics Class Notes] on Relation Between Celsius and Kelvin Pdf for Exam

You must have felt your temperature due to fever during times of illness. During the Covid-19 times, everywhere we visited, our temperatures would be checked. As per the Georgia State University, temperature can be defined as a measure which is the average of kinetic energy of a substance. This temperature is measured using certain scales universally. Today we will study two of them – celsius and kelvin. 

Celsius and Kelvin Scales

Kelvin and Celsius are standard units that are used to measure temperature. They have both similarities and differences. One difference is that their starting point varies. IF K is the temperature on the Kelvin Scale and D is the temperature on the Celsius scale, then 

K = D + 273 or D = K – 273. 

The units for Celsius and Kelvin are degree celsius and the temperature in the kelvin scale itself respectively. 

The scales are used to obtain measurements of temperature which are then used in various calculations and calibrations. The facts and parameters for both celsius and kelvin are equally valid. The value of Kelvin especially stands at -273 which is also the negative reciprocal of 0.0366. It is considered as a reliable thermodynamic measuring scale and because it gives almost errorless results, it is widely used by scientists. While celsius is more familiar to common people, kelvin is used in standardized processes and equations. 

With international agreements certifying the celsius scale, we can use it to measure both the absolute zero and triple point apart from the freezing and boiling points of water. 

Difference Between Celsius and Kelvin Scale

Until 1954, Scientists stated that the melting point of ice is 00 C and the boiling point of ice is 100 0C. All these parameters are considered under constant temperature and pressure. It would help if you learnt all these from your schools.

 

Well, the unit’ degrees Celsius’ is available in the standard Celsius scale. The international agreement has certified this scale. You can calculate the temperature of two different points, such as absolute zero and absolute point. This type of scale is used to calculate the temperature difference of specially prepared water.

 

Temperature measuring units like Celsius and Kelvin both are significant. The use of these two units in particular in the scientific world. In these cases, calibration is essential. Also, these two units possess very much similarity along with distinct quality.

 

These two parameters are widely used among multiple sectors for the proper measurement of instruments. 

Insights from History:

Andres Celsius Put forward the unit ‘Celsius” after his name. He invented the unit in 1742. Just explained before, the boiling point and melting point of ice before 1954 was 1000C and 0oC. These parameters were obtained under standard atmospheric pressure.

 

Scientists considered the obtained measurements for the calculation of multiple problems and any other important calculations or mechanical usages.

 

However, the actual value is -273.15 0C, and the triple point lies at 00C. Many scientists consider the definition for Celsius scale still worthy. Well, let’s not focus on the definition but focus on facts and parameters.

 

Like Celsius, Kelvin was denoted as the degree unit to honor Sir William Thomson the Baron of Kelvin. He was the first person who proposed that there should be another system just like the same size as the unit (Celsius). 

 

Some scientists are predicting the reason behind why it can easily be combined with any type of mathematical equation. Also, the definition has the statement that it is having variables of temperature. 

Calculation of Celsius and Kelvin

The Celsius scale slightly differs from the Kelvin but not that much. First, you may change it to Kelvin. Then the value is ready to apply.  

 

It is quite easy if you consider the conversion as usual. If you want to convert it to Kelvin, add 273.15 to your Celsius value, such as K = °C + 273.15.

 

But in the case of calculation of Celsius, try the subtraction method.

 

Subtract the same constant from Kelvin value to convert it to Celsius such as °C = K − 273.15.