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Redshift and blueshift. If a source of the light is moving away from an observer, then redshift (z > 0) occurs; if the source moves towards the observer, then blueshift (z < 0) occurs. This is true for all electromagnetic waves and is explained by the Doppler effect. Consequently, this type of redshift is called the Doppler redshift.
Given that, in the case where the inertially moving source and receiver are geometrically at their nearest approach to each other, the receiver observes a blueshift, whereas in the case where the receiver sees the source as being at its closest point, the receiver observes a redshift, there obviously must exist a point where blueshift changes ...
The hydraulic cylinder motion was reversed multiple times during each data run after a constant integral number of transducer vibrations. Every several days, the position of the source and absorber would be reversed so that half the data runs would be of blueshift, and half would be of redshift. [5]
The opposite effect, in which photons gain energy when travelling into a gravitational well, is known as a gravitational blueshift (a type of blueshift). The effect was first described by Einstein in 1907, [ 3 ] [ 4 ] eight years before his publication of the full theory of relativity .
The redshift is the relative increase in the wavelength emitted by a light source, in this case a galaxy, moving away from an observer from which its speed and then, using Hubble's law, its distance can be calculated. A 3-dimensional map of that part of the Universe could thus be produced. This initial data collection was completed by 1982. [1]
Blueshift, an unreleased album by Splashdown "Blue Shift" (short story), a science fiction short story by Stephen Baxter; Blueshifting, an information technology term defined in Redshift (theory) Blue shift (molecule) (a.k.a. "hypsochromic shift"), a change in spectral band position in a spectrum of a molecule to a shorter wavelength
Blueshift, any decrease in wavelength, with a corresponding increase in frequency, of an electromagnetic wave Redshift , a phenomenon that occurs when light seen coming from an object that is moving away is proportionally increased in wavelength, or shifted, to the red end of the spectrum
Redshift quantization, also referred to as redshift periodicity, [1] redshift discretization, [2] preferred redshifts [3] and redshift-magnitude bands, [4] [5] is the hypothesis that the redshifts of cosmologically distant objects (in particular galaxies and quasars) tend to cluster around multiples of some particular value.