Definitions
from The Century Dictionary.
- noun The space above the summit of the mercury column in any barometer. This space should be a (relatively) perfect vacuum: if it is not, then the correction or reduction to a vacuum should be determined by Arago's method.
Etymologies
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Examples
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The jointed U-tubes of the vacuum-chamber are pressure-tempered colloid (no glass would endure the strain for an instant) and a junior engineer with tinted spectacles watches the Ray intently.
Actions and Reactions Rudyard Kipling 1900
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