luminosity function वाक्य
उदाहरण वाक्य
मोबाइल
- Canadian astronomer Ren?Racine assumed the use of the globular cluster luminosity function ( GCLF ) would lead to a better approximation.
- The luminosity function that describes the perceived brightnesses of different wavelengths is thus roughly analogous to the spectral sensitivity of M cones.
- For a light source with mixed wavelengths, the number of lumens per watt can be calculated by means of the luminosity function.
- In practice, the integral is replaced by a sum over discrete wavelengths for which tabulated values of the luminosity function are available.
- The small excess fractional value comes from the slight mismatch between the definition of the lumen and the peak of the luminosity function.
- This shifts the peak of the luminosity function from the faint end to a brighter luminosity and changes the shape of the luminosity function.
- This shifts the peak of the luminosity function from the faint end to a brighter luminosity and changes the shape of the luminosity function.
- Having very overdense or underdense regions of objects will cause an inferred change in our average absolute magnitude and luminosity function, according with the structure.
- We find that the luminosity functions and total stellar mass densities are in agreement with observations when plausible assumptions about reddening at z ~ 6 are made.
- Note that the term " function " is slightly misleading, and the luminosity function might better be described as a luminosity " distribution ".
- Given a luminosity as input, the luminosity function essentially returns the abundance of objects with that luminosity ( specifically, number density per luminosity interval ).
- The number of candelas or lumens from a source also depends on its spectrum, via the nominal response of the human eye as represented in the luminosity function.
- The radiometric unit watts per square metre, but with the power at each wavelength weighted according to the luminosity function, a standardized model of human visual brightness perception.
- The "'luminosity function "'or "'luminous efficiency function "'describes the average spectral sensitivity of human visual perception of brightness.
- This is a particular issue with the faint objects in calculating a luminosity function, as their smaller maximum volume means that a large-scale structure therein will have a large impact.
- For instance, when trying to obtain a luminosity function, calibrate the Tully Fisher relation, or obtain the value of the Hubble constant, the Malmquist bias can strongly change the results.
- They are based on an agreed-upon standard luminosity function which is based on measurements of the spectral characteristics of image-forming " visual photoreception " in many individual human eyes.
- Like the photometric definition, it is related to the luminous flux density in a particular direction, which is radiant flux density weighted by the luminosity function ( " ? " ) of the CIE Standard Observer.
- The results will also test current theories of gravity by mapping the growth of structure with redshift . Thirdly, detailed analysis of star-formation rates, environments, morphologies and luminosity functions will provide information on galaxy evolution.
- The sensitivity of cones to both of the spectral colors at the opposite extremes of what the human eye can see is quite low ( see luminosity function ), so commonly observed purple colors do not achieve a high level of brightness.
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