Jul

21

What is the lowest possible temperature that can be obtained? (in kelvins)?

Filed Under Physical Chemistry 

I am a student of chemistry. Please describe related to physical chemistry.
I am asking what is the lowest possible temperature that can be obtained PRACTICALLY (it is not zero)?



By: ශාකුන්තල | shaakunthala

Comments

3 Responses to “What is the lowest possible temperature that can be obtained? (in kelvins)?”

  1. Anican76 on July 23rd, 2009 10:40 pm

    Theoretically, the lowest posible temperature is 0 Kelvin (-273C). At this point it is believed that the vibrational energy of atoms is reduced to zero and all vibration stops. This point is called Absolute Zero as there is no more vibrational energy to lose, and so you can’t get any colder.

  2. junky on August 2nd, 2009 9:25 am

    The lowest possible temperature anything can be is absolute zero, or 0 degrees Kelvin.

    At this temperature there is absolutely no heat.

  3. Ross P on August 4th, 2009 12:22 pm

    Like they have said, THEORETICALLY, absolute zero is the lowest temperature attainable. This temperature is defined by the 3rd law of thermodynamics as the temperature at which a perfect, pure crystal has an entropy of zero. It has been conjectured that all molecular movement stops. However, this is another white rabbit in science, much the same as a perfect circuit, and total vaccuum, and so on. The lowest temperature we have been able to acheive is around .45 nanoKelvins, which was done using a sodium lattice. Helium freezers are commonly employed in astrochemistry and have a core temp of around 4°K.

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