A prototype solid-state refrigerator developed by researchers at the National Institute of Standards and Technology (NIST) uses quantum physics to cool a much larger object to extremely low temperatures. Measuring a few inches in outside dimensions, its cooling power is said to be equivalent to that of a window-mounted air-conditioner cooling a building the size of the Lincoln Memorial in Washington, DC. Just like with a normal refrigerator, suitable objects can be placed in the unit's cooling zone and later removed and replaced.
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