Intensity is a widely-used term, which can refer to:

In colloquial use

• Strength
• Amplitude
• Level
• Magnitude

In physics

• Intensity (physics), power per unit area (W/m²)
• Field strength of electric, magnetic, or electromagnetic fields (V/m, T, etc.)

In optics

• Radiant intensity, power per unit solid angle (W/sr)
• Luminous intensity, luminous flux per unit solid angle (lm/sr or cd)
• Irradiance, power per unit area (W/m²)

In heat transfer

• Intensity (heat transfer), radiant heat flux per unit area per unit solid angle (W·m^-2·sr^-1)

In astronomy

• Radiance, power per unit solid angle per unit projected source area (W·sr^-1·m^-2)

In seismology

• Mercalli intensity scale, a measure of earthquake impact
• Japan Meteorological Agency seismic intensity, a measure of earthquake impact
• Peak ground acceleration, a measure of earthquake acceleration (g or m/s²)

Other uses

• Value intensity in philosophy and ethics
• In video luminous emittance, the luminous flux per unit area (lm/m² or lux)
• Energy intensity, an economic measure of energy consumed per unit of GDP (J/$, etc.)
• Carbon intensity, any of several measures of release of carbon into the environment
• Exercise intensity, a measure of how much work is done during exercise (% of max heart rate)
• Intensity (novel), a novel by Dean Koontz
  • Intensity (film), a 1997 made for TV movie based on the novel

See also

• Sound intensity
• Brightness

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This page was last modified on 20 February 2010 at 03:00.

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This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article on "Intensity", which is available in its original form here:

http://en.wikipedia.org/w/index.php?title=Intensity

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