- group wavelength
- 群波长
English-Chinese dictionary of mechanical engineering (英汉机械工程大词典). 2013.
group wavelength
Look at other dictionaries:
Group delay and phase delay — Group delay is a measure of the time delay of the amplitude envelopes of the various sinusoidal components of a signal through a device under test, and is a function of frequency for each component. Phase delay is a similar measure of the time… … Wikipedia
Group 70 — Infobox Telescope bgcolour = name = Group 70 caption = Group 70 Large amateur Telescope organization = Group 70 location = TBD Northern California coords = altitude = weather = wavelength = Optical IR built = TBD website = http://group70.org… … Wikipedia
group velocity — /grup vəˈlɒsəti/ (say groohp vuh losuhtee) noun (in waves whose phase velocity varies with wavelength) a non sinusoidal disturbance which will travel at a velocity different from the phase velocity …
Renormalization group — In theoretical physics, the renormalization group (RG) refers to a mathematical apparatus that allows systematic investigation of the changes of a physical system as viewed at different distance scales. In particle physics, it reflects the… … Wikipedia
Protecting group — A protecting group or protective group is introduced into a molecule by chemical modification of a functional group in order to obtain chemoselectivity in a subsequent chemical reaction. It plays an important role in multistep organic synthesis.… … Wikipedia
Excitation wavelength — The excitation wavelength describes the light shone on a sample to transfer energy to ( to excite ) a light reactive chemical group in any compound. Its unit is usually given in nanometers (nm). An example is the green fluorescent protein (GFP),… … Wikipedia
Quantum radar — is a technology which has been developed and patented [ cite web | url = https://publications.european patent office.org/PublicationServer/documentpdf.jsp?PN=EP1750145%20EP%201750145 iDocId=6181555 iepatch=.pdf | title = European patent number… … Wikipedia
Noble gas — Group 18 Period 1 2 He 2 … Wikipedia
Dispersion (water waves) — This article is about dispersion of waves on a water surface. For other forms of dispersion, see Dispersion (disambiguation). In fluid dynamics, dispersion of water waves generally refers to frequency dispersion, which means that waves of… … Wikipedia
Refractive index — Refraction of light at the interface between two media. In optics the refractive index or index of refraction of a substance or medium is a measure of the speed of light in that medium. It is expressed as a ratio of the speed of light in vacuum… … Wikipedia
cosmos — /koz meuhs, mohs/, n., pl. cosmos, cosmoses for 2, 4. 1. the world or universe regarded as an orderly, harmonious system. 2. a complete, orderly, harmonious system. 3. order; harmony. 4. any composite plant of the genus Cosmos, of tropical… … Universalium
