Crossword clues for redshift
Wiktionary
n. 1 (context physics English) A change in the wavelength of light, in which the wavelength is longer than when it was emitted at the source. 2 (context politics English) The statistical bias towards Republican (or Blue Dog) candidates of US federal elections whose reported results vary considerably from those indicated by voter exit polls.
Wikipedia
Redshift is a phenomenon in physics, especially astrophysics
Redshift or red shift may also refer to:
In physics, redshift happens when light or other electromagnetic radiation from an object is increased in wavelength, or shifted to the red end of the spectrum. In general, whether or not the radiation is within the visible spectrum, "redder" means an increase in wavelength – equivalent to a lower frequency and a lower photon energy, in accordance with, respectively, the wave and quantum theories of light.
Some redshifts are an example of the Doppler effect, familiar in the change of apparent pitches of sirens and frequency of the sound waves emitted by speeding vehicles. A redshift occurs whenever a light source moves away from an observer. Another kind of redshift is cosmological redshift, which is due to the expansion of the universe, and sufficiently distant light sources (generally more than a few million light years away) show redshift corresponding to the rate of increase in their distance from Earth. Finally, gravitational redshift is a relativistic effect observed in electromagnetic radiation moving out of gravitational fields. Conversely, a decrease in wavelength is called blueshift and is generally seen when a light-emitting object moves toward an observer or when electromagnetic radiation moves into a gravitational field. However, redshift is a more common term and sometimes blueshift is referred to as negative redshift.
Knowledge of redshifts and blueshifts has been applied to develop several terrestrial technologies such as Doppler radar and radar guns. Redshifts are also seen in the spectroscopic observations of astronomical objects. Its value is represented by the letter z.
A special relativistic redshift formula (and its classical approximation) can be used to calculate the redshift of a nearby object when spacetime is flat. However, in many contexts, such as black holes and Big Bang cosmology, redshifts must be calculated using general relativity. Special relativistic, gravitational, and cosmological redshifts can be understood under the umbrella of frame transformation laws. There exist other physical processes that can lead to a shift in the frequency of electromagnetic radiation, including scattering and optical effects; however, the resulting changes are distinguishable from true redshift and are not generally referred to as such (see section on physical optics and radiative transfer).
Redshift is a British electronic music group, founded in 1996 by Mark Shreeve. Their musical style is rooted in the early to mid 1970’s German electronic music era, often described as Berlin School, and transcends the genre using musical originality, multi-instrumentation, and complex harmonic arrangements using analogue sequencing. Their pieces are described as both exciting and haunting in equal measure, expressing strong central themes, and include contrasting atmospheres of rich sonic textures. Redshift music has been played on BBC TV and some listeners have likened certain pieces to film score, neo-industrial, as well as dark ambient. Listeners have commented on the hypnotic quality of the musical compositions.
Their sound is largely dependent upon older synthesiser technology, notably instruments such as the Moog 3C which they combine with more recent digital technology. The basic technological philosophy of Redshift is to use analogue synthesis where possible, augmented where necessary by digitally sampled versions of hard-to-maintain analogue instruments such as the Mellotron. Redshift use analogue instruments manufactured by Moog, Yamaha, Oberheim, Korg, Roland, PPG, Analogue Systems, Doepfer, Modcan, Solina, and Fender Rhodes.
Redshift is a techno-economic theory suggesting hypersegmentation of information technology markets based on whether individual computing needs are over or under-served by Moore's law, which predicts the doubling of computing transistors (and therefore roughly computing power) every two years. The theory, proposed and named by New Enterprise Associates partner and former Sun Microsystems CTO Greg Papadopoulos, categorized a series of high growth markets (redshifting) while predicting slower GDP-driven growth in traditional computing markets (blueshifting). Papadopoulos predicted the result will be a fundamental redesign of components comprising computing systems.
Redshift is planetarium software created by Maris Multimedia. It runs on PC with Microsoft Windows, Mac OS X and iOS.
Redshift is an application that adjusts the computer display's color temperature based upon the time of day. The program is free software, inspired by the proprietary f.lux, and is intended to reduce eye strain as well as insomnia.
Redshift transitions the computer display's color temperature evenly between daytime and night temperatures to allow the user's eyes to slowly adapt. At night, the color temperature is low and is typically 3000–4000 K, preferably matching the room's lighting temperature. Typical color temperature during the daytime is 5500–6500 K.
"Redshift" is a single by British band Enter Shikari. The song was first played on BBC Radio 1 on 11 January 2016 and released as a digital single the day after. An official video for the song directed by Mike Tyler was released on YouTube the same day.
Usage examples of "redshift".
If most quasars, as indicated by their extreme redshifts, were more than nine or ten billion light-years away in distance, then they also must be nine or ten billion years away in time, and therefore must belong to a past era of the universe.
Oilcan bitched that she was ripped off, because the detail job was so simple—gold pin striping—on a redshift paint job, but hell, it was perfection.
Since 1929, when Edwin Hubble formulated the law that redshift increases proportionally with distance, redshift has been the key to interpreting the size of the universe as well as being the prime evidence indicating it to be expanding from an initially compact object.
They asserted that the expansion of the universe and the redshift could be explained if it were assumed that single atoms of hydrogen were somehow coming into being constantly in the depths of spaceperhaps about one hydrogen atom per year in a volume of space equal to that of the Great Mosque.
Slipher (who, as is often the case in instances like this, was looking for something else) inferred from redshifts of the spectra of about a dozen galaxies in the vicinity of our own that the galaxies were moving away at speeds ranging up to a million miles per hour.
If the redshifts have been misunderstood, then inferred distances can be wrong by a factor of from 10 to 100, and luminosities and masses wrong by factors up to 10,000.
They’ve completely misconstrued the redshift evidence, thinking it indicates an expanding universe.
Its pronounced redshift on the spectrum made early Terran astronomers think it was much farther away than it had turned out to be.
Companion galaxies are found to be systematically redshifted with respect to the central galaxy, indicating them to be first-generation descendants.
All members of the group, including our galaxy, are redshifted with respect to M31, indicating it to be the source from which the rest were ejected as young, high-energy objects at some time.
Once more, every major companion to M81 is redshifted with respect to it.
It was the rearward blind spot, the blank disk that concealed a redshifted Sol.
At times the situation grew even more frustrating as the movement and gravity wells of the planets themselves introduced slight redshifting problems and microscopic time-dilation effects.
After all, at a gamma factor of, say, seventy thousand, a one-minute message would stretch out to seven weeks of ordinary time, to say nothing of the redshifting of the radio waves themselves to beyond the level of detectability.
I talked to an astrophysicist in NASA who believed that Halton Arp—excommunicated from American astronomy for presenting evidence contradicting the accepted interpretation of the cosmic redshifts that the Big Bang theory rests on—was "onto something.