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The technique to measure the temperature of the sun

December 01, 2010  by: RITURAJ BANERJEE  Points: 12   Category: General Science  Earning $0.10   Views: 3361

Sun - the hot ball of gases has very high temperature and so it can not be measured by using simple instruments like thermometer or Pyrometer.A special instrument with special technique is used for the same.

         

We all know that the sun is the brightest and the closest star from the earth.The temperature of the sun is too high and so, it is measured by a special technique.Temperature can be measured in so many ways.Mercury thermometer is known to all of us.This is one of the common way to measure the temperature.Here,the rising column of the mercury measures the temperature.But the mercury thermometer can be used up to a certain temperature and above that,we have to apply certain different process and instruments.Temperature above 357 degree centigrade such as in furnace can be measured by an instrument called Pyrometers .



Sun's temperature is too high to measure with these above mentioned instruments.A different technique is used to measure the temperature of the sun.This technique is based on a law known as Wien's Law.According to this law,the colours when fall on hot objects,the objects give of energy.The colour at which the object gives of maximum energy is related to the temperature of the hot body.
The sun emits light of several colours.To measure the temperature of the sun by the above mentioned method an instrument is used called Bolometer .After analyzing the sunlight by the Bolometer,the maximum intensity is found to fall on the green part of the sun's emitted band of light.With the help of Bolometer and by applying the Wien's Law,the value of sun's temperature is found which is about 5,800 degree Kelvin.




Comment(s)
Author: VIKAS        
Posted Date: 12/03/2010    Points:1    

Very nice article, I did enjoy reading this article. Thank you very much for sharing this article.
Author: rockstar        
Posted Date: 12/05/2010    Points:1    

Measuring the temperature of sun can be a very tough task and you have given the proper information about it which will be very useful to many.
Author: Unmesh        
Posted Date: 12/06/2010    Points:1    

I want to thank you, you have written articles in a very important subject.
Author: ARIF        
Posted Date: 01/08/2011        

I am thankfull to author for such a subject.
Author: joeldgreat        
Posted Date: 02/09/2011    Points:1    

I know all about pyrometers but I don't know that it can be use to measure the sun's temperature. Thanks for sharing your article with us.

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