For Refrigeration Problems, a Magnetically Attractive Solution (1 of 2) (IMAGE)

National Institute of Standards and Technology (NIST)

For Refrigeration Problems, a Magnetically Attractive Solution (1 of 2)

Caption

When a gas is compressed (2), it heats up, but if it is cooled and then allowed to expand (3), its temperature drops much lower than it was originally (4); this principle keeps food in your home refrigerator cool.

Credit

Credit: Talbott, NIST

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