wave length


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wave length

wave length
The distance traveled in one period or one cycle by a periodic disturbance. It is the distance between repeating units of a wave pattern. It is commonly designated by the Greek letter lambda (λ). In a sine wave, the wavelength is the distance between peaks. The wavelength λ has an inverse relationship to frequency, f, the number of peaks to pass a point in a given time. The wavelength is equal to the speed of the wave divided by the frequency of the wave. The relationship thus is wavelength (λ) = speed of waves (c)/frequency (f). When dealing with electromagnetic radiation in a vacuum, the speed of the waves (c) is the speed of light; when dealing with the speed of signal waves in air, the speed of sound is used for calculation purposes.
The speed of light in a vacuum is 300,000,000 m/s and that of sound at 20°C is 343 m/s. The value of the wavelength of radio waves is equal to 300/frequency in MHz (megahertz).
References in periodicals archive ?
For sand wave length, sand wave height, crest elevation, and trough elevation we found that the Weibull and Gamma distributions provide the best fit.
Hence, x-ray emission can be used to prepare concentration profiles for different elements by energy dispersion (EDX) and wave length dispersion (microprobe).
--[([L.sub.w]).sub.3]--relative wave length between two successive combs (horizontal distance between two combs in movement way);
When, for example, the ash of an important specimen is subjected to an intense source of energy, traditionally a flame or carbon arc, the metals give off characteristic wave lengths of radiation.
Al-Araby said his meeting with Abbas was "important." He said the Palestinian leadership, the Arab countries, the international community and the US were on the same wave length that the conflict should end.
Wave period dependence of wave height T = f(h) and wave length dependence of the same wave height [lambda] = f(h) are known for Constanta Black Sea area.
Relativistic Radiation "Temperatures of millions of degrees would be required to produce the observed high intensities in the meter wave length range for the bright sources such as Cassiopeia A, Cygnus A, and the like.
THE GLUMS: Jack fails in his attempt to cheer up 007; WAVE LENGTH: Sir Sean seems more interested in fans
Terzi, in remarks after a meeting with Yemeni Noble peace prize winner Tawakul Karman, said European and Western countries were on the same wave length over the measures to be taken against Syria.
According to the Stefan-Boltzmann law is U ~ [T.sub.body] x [epsilon] whereas the emission ratio [epsilon] depends on several factors (material, surface character, temperature, wave length, measurement setup, etc).
The people at home were not on his aquatic wave length - quite the opposite.