frequency | has symbol ν | ![2001-09-27 09:33:15.0 2001-09-27 09:33:15.0](facet.gif) |
has unit frequency unit | ![2001-09-27 09:33:15.0 2001-09-27 09:33:15.0](facet.gif) |
has definition The number of peaks (often called crests) of a propagating wave that cross a given point in a unit of time. For example, if 1000 peaks cross a given point in one second, one says that the frequency is 1000 cycles per second or 1000 hertz. | ![has source: Guth, A.H. 1997 The Inflationary Universe, Addison-Wesley, 2001-09-27 09:33:15.0 has source: Guth, A.H. 1997 The Inflationary Universe, Addison-Wesley, 2001-09-27 09:33:15.0](facet.gif) |
has definition The number of complete wave cycles a wave completes each second. | ![has source: Greene, B. 1999 The Elegant Universe, W.W. Norton and Co., New York, 2001-09-27 09:33:15.0 has source: Greene, B. 1999 The Elegant Universe, W.W. Norton and Co., New York, 2001-09-27 09:33:15.0](facet.gif) |
has definition The number of oscillations or wave cycles per second passing a given point. For electromagnetic radiation, the product of the frequency and the wavelength is the speed of light. | ![has source: McLean, I.S. 1997 Electronic Imaging in Astronomy, Wiley, 2001-09-27 09:33:15.0 has source: McLean, I.S. 1997 Electronic Imaging in Astronomy, Wiley, 2001-09-27 09:33:15.0](facet.gif) |
has definition The number of cycles or complete alternations per unit time of a carrier wave, band, or oscillation. | ![has source: Seidelman, P. 1992 Explanatory Supplement to the Astronomical Almanac, University Science Books, Mill Valley, CA, 2001-09-27 09:33:15.0 has source: Seidelman, P. 1992 Explanatory Supplement to the Astronomical Almanac, University Science Books, Mill Valley, CA, 2001-09-27 09:33:15.0](facet.gif) |
has definition Number of oscillations per second of an electromagnetic wave. The amplitude of a wave depends on the intensity; the wavelength, on the frequency. | ![has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:33:15.0 has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:33:15.0](facet.gif) |
is a kind of quantity | ![2001-09-27 09:33:15.0 2001-09-27 09:33:15.0](facet.gif) |
number | has value | ![2001-09-27 09:32:57.0 2001-09-27 09:32:57.0](facet.gif) |