Physics
- Power (physics), the rate at which work is performed or energy is converted
- Electric power, the rate at which electrical energy is transferred by a circuit
- Human power, the rate of work performed by a human
- Motive power, an agent used to create motion
- AC power, power in an alternating current electric circuit
- Optical power, the degree to which a lens converges or diverges light
- Magnification, the factor by which an optical system enlarges an image
- Transmitter power output, the power used by a radio transmitter
- Effective radiated power, a standardized theoretical measurement of the power of a radio transmitter
- Power spectral density, a real function denoting the power or energy of a signal
- Electrical power industry, companies generating electricity for the electrical grid
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Famous quotes containing the word physics:
“It is hardly to be believed how spiritual reflections when mixed with a little physics can hold people’s attention and give them a livelier idea of God than do the often ill-applied examples of his wrath.”
—G.C. (Georg Christoph)
“Although philosophers generally believe in laws and deny causes, explanatory practice in physics is just the reverse.”
—Nancy Cartwright (b. 1945)
“Mathematics should be mixed not only with physics but with ethics.”
—Henry David Thoreau (1817–1862)