децибел

децибел

Db, an expression of ratio (see db, above). One tenth of a Bel. See NIST website for further definition.

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Loại từ: noun
Từ đồng nghĩa:
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Ngành nghề/Lĩnh vực: Aerospace
Category: Space flight
Company: NASA
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децибел (dB)

Aerospace; Satellites

The standard unit used to express the ratio of two power levels. It is used in communications to express either a gain or loss in power between the input and output devices.

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Aerospace; Space flight

A reusable spacecraft with wings developed by the U.S. National Aeronautics and Space Administration (NASA) for human spaceflight missions. The first test flight took place in ...

таласна дужина

Aerospace; Space flight

The distance that a wave from a single oscillation of electromagnetic radiation will propagate during the time required for one oscillation.

ват

Aerospace; Space flight

A measure of electrical power equal to potential in volts times current in amps.

ултраљубичаст (УВ)

Aerospace; Space flight

Literally means "above violet" radiation. Electromagnetic radiation in the neighborhood of 100 nanometers wavelength.

Уран

Aerospace; Space flight

Seventh planet from the sun, a gas giant or Jovian planet.

тера (Т)

Aerospace; Space flight

A multiplier x1012, from the Greek teras (monster). See the entry for CGPM.

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