"Redshift" Essays and Research Papers

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SCIENCE-­‐1  TERM  PAPER   The new Physics of Cosmic Redshift Introduction:As we all know that light travels from source in a straight line(ray) according to concepts of classical ray optics. Redshift is the phenomenon by which light rays from distant stars that are observed on earth, show smaller frequency (longer wavelength) i.e. shifted towards the “red” end of the visible light region. This phenomenon of redshift is conventionally explained by the well-known “Doppler effect”. But...

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Cosmice Microwave Background Radiation

a particular direction at about 600 km/s. In the direction we are moving the wavelengths of the radiation are squashed together (a blue-shift), making the sky appear hotter there, while in the opposite direction the wavelengths are stretched out (redshift), making the sky appear colder there. When this dipole pattern, due to our motion, is removed, the CMB sky appears incredibly isotropic. Further investigations, including more recent ones by the COBE satellite (eg Smoot et. al.), confirmed the virtual...

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Georges Lemaitre: The Big Bang Theory

pieces of evidence supporting it, some people still disagree with the theory. Evidence supporting the Big Bang theory includes redshift, Cosmic Background Microwave Radiation and Edwin Hubble’s similar data. Redshift is when the observed wavelength of a galaxy moving away from us, is moving towards red on a wavelength spectrum and the farther the galaxy, the greater the redshift. In short, red shift shows that a galaxy moves faster as it gets farther from us, and “Since we cannot assume that we have...

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Life Cycle of a Star (Gcse Level)

(especially astrophysics), redshift happens when light seen coming from an object is proportionally increased in wavelength, or shifted to the red end of the spectrum. More generally, where an observer detects electromagnetic radiation outside the visible spectrum, "redder" amounts to a technical shorthand for "increase in electromagnetic wavelength" — which also implies lower frequency and photon energy in accord with, respectively, the wave and quantum theories of light. Redshifts are attributable to...

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Discussion 1

theory on many different factors/observations. The most important is the “redshift” of very far away galaxies. Redshift is the doppler reaction that occurs in light. When an object moves away from earth, it looks reddish because the movement stretches the wavelength. The reddish color occurs because; red is the lowest wavelength on the visible. The more redshift there is, the faster the object is moving away. By measuring the redshift, scientists proved that the universe is expanding and can even work...

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Hr Assesement

and what are the main characteristics? Quasars have little or no visible angular extent. Quasars have rapid light variations. Even high-redshift quasars have long jets. Features in quasar jets are observed to move outward. The angular size of visible nebulas surrounding some quasars does not diminish, and may even increase, with increasing redshift. Some high-redshift quasars are relatively bright. Chapter 26: 4. What is the origin of the Big Bang Theory? The history of the Big Bang theory...

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method: find the period to get the luminosity measure the apparent brightness determine distance from luminosity and brightness RED SHIFT * Based on Edwin Hubble’s theory that the world is expanding * Observed as redshift of a galaxy spectrum * Redshift was larger for faint (further away) galaxies * The farther a galaxie the faster it’s receding from earth * V = H x d v=galaxies radial outward velocity / d=galaxies distance from earth / H=constant of proportionally...

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Big Bang Theory

simplifying assumptions such as homogeneity and isotropy of space. The governing equations had been formulated by Alexander Friedmann. In 1929, Edwin Hubble discovered that the distances to far away galaxies were generally proportional to their redshifts—an idea originally suggested by Lemaître in 1927. Hubble's observation was taken to indicate that all very distant galaxies and clusters have an apparent velocity directly away from our vantage point: the farther away, the higher the apparent velocity...

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The Achievements of Edwin Powell Hubble

they progress. Hubble originally thought that galaxies evolved from ellipticals to spirals, but scientists now know that each galaxy's shape is determined in its early life (Space.com, 2012) While studying the different galaxies, Hubble noticed redshifts in the emission of light from the galaxies. He saw that they were moving away from each other at a rate constant to the distance between them. Hubble was then able to determine that they did not sit stationary in space. Instead, virtually every galaxy...

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Four Pillars of Big Bang Theory

constant to his equations that made his calculations consistent with a static universe. (Expanding universe, n.d.) Einstein admitted this was a great mistake when Edwin Hubble demonstrated that the more distant a galaxy is from earth, the greater its redshift and therefore the faster it moves away from us. The velocity of galaxies that are moving away from us can be given by an equation known as Hubble’s law: v = H*d. (Martin White, n.d.) Where V represents velocity, H represents Hubble’s constant and...

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