Cavity may refer to:
Biology and healthcare
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Body cavity, a fluid-filled space in many animals where organs typically develop
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Gastrovascular cavity, the primary organ of digestion and circulation in cnidarians and flatworms
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Dental cavity or tooth decay, damage to the structure of a tooth
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Lung cavity, an air-filled space within the lung
Radio frequency resonance
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Microwave cavity or ''RF cavity'', a cavity resonator in the radio frequency range, for example used in particle accelerators
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Optical cavity An optical cavity, resonating cavity or optical resonator is an arrangement of mirrors or other optical elements that forms a cavity resonator for light waves. Optical cavities are a major component of lasers, surrounding the gain medium and provi ...
, the cavity resonator of a laser
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Resonant cavity
A resonator is a device or system that exhibits resonance or resonant behavior. That is, it naturally oscillates with greater amplitude at some frequencies, called resonant frequencies, than at other frequencies. The oscillations in a resonato ...
, a device designed to select for waves of particular wavelengths
Other uses
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Cavity (band), a sludge metal band from Miami, Florida
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Cavity method, a mathematical method to solve some mean field type of models
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Cavity wall, a wall consisting of two skins with a cavity
See also
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Cavitation
Cavitation is a phenomenon in which the static pressure of a liquid reduces to below the liquid's vapour pressure, leading to the formation of small vapor-filled cavities in the liquid. When subjected to higher pressure, these cavities, cal ...
, the phenomenon of partial vacuums forming in fluid, for example, in propellers
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Cavitary pneumonia, a type of pneumonia in which a hole is formed in the lung
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Cavity Search (disambiguation)
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Hollow (disambiguation)
Hollow may refer to:
Natural phenomena
*Hollow, a low, wooded area, such as a copse
*Hollow (landform), a small vee-shaped, riverine type of valley
* Tree hollow, a void in a branch or trunk, which may provide habitat for animals
Places
*Sleepy ...
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