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Q.

Value of absolute "Zero"

Tags: science
Asked by pranesh lahiri, 19 Oct '10 01:40 pm
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Answers (5)

 
1.

Absolute zero is the theoretical temperature at which entropy would reach its minimum value. The laws of thermodynamics state that absolute zero cannot be reached because this would require a thermodynamic system to be fully removed from the rest of the universe.
A system at absolute zero would still possess quantum mechanical zero-point energy. While molecular motion would not cease entirely at absolute zero, the system would not have enough energy for transference to other systems. It is therefore correct to say that molecular kinetic energy is minimal at absolute zero.
By international agreement, absolute zero is defined as 0K on the Kelvin scale and as 273.15C on the Celsius scale.[1] This equates to 459.67F on the Fahrenheit scale. Scientists have achieved temperatures very close to absolute zero.
Answered by LIPSIKA, 19 Oct '10 01:43 pm

 
  
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2.

Absolute zero is the theoretical temperature at which entropy would reach its minimum value.
Answered by sumati gayki, 21 Mar '11 12:01 pm

 
  
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3.

Absolute zero is the point where no more heat can be removed from a system, according to the absolute or thermodynamic temperature scale. This corresponds to 0 K or -273.15C. In classical kinetic theory, there should be no movement of individual molecules at absolute zero, but experimental evidences shows this isn't the case.
Answered by anil garg, 24 Oct '10 11:23 pm

 
  
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4.

-273 deg
Answered by dhanendra kumar jain, 19 Oct '10 02:32 pm

 
  
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5.

-273k
Answered by mohd basheer, 19 Oct '10 01:41 pm

 
  
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