: a theoretical temperature characterized by complete absence of heat and motion and equivalent to exactly −273.15°C or −459.67°F
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Chocolate bunnies melt in a car when temperatures reach anything north of absolute zero.
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Unlike Hubble, which resides in low-Earth orbit and has been kept alive by repeated servicing missions, Webb would be stationed beyond the orbit of the moon and cooled nearly to absolute zero by its sunshield.
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After spending three months at a temperature of just 20 degrees Celsius above absolute zero, the massive James Webb Space Telescope emerged from a large vacuum chamber at the end of 2017.
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Whiteness is like absolute zero and episodes of Real Housewives—the bottom is only theoretical.
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The scanner is big because the sensors that measure the brain’s magnetic field need to be kept at close to absolute zero, or negative 269 degrees Celsius.
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These superconductors can operate at particularly high temperatures of around -388 degrees Fahrenheit, as opposed to most superconductors which must be kept at temperatures closer to absolute zero in order to function.
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Quantum computing would change that by using particles called qubits, which are suspended in a super-cold environment where the temperature nears absolute zero.
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Previously, scientists had thought superconductors — which could carry electricity essentially forever without sustaining any losses — could exist only in extremely frigid conditions close to absolute zero.
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First Known Use of absolute zero
1798
ABSOLUTE ZERO Defined for English Language Learners
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absolute zero
: a theoretical temperature characterized by complete absence of heat and equivalent to exactly −273.15°C or −459.67°F
Learn More about absolute zero
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Britannica.com: Encyclopedia article about absolute zero
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