Web Results

en.wikipedia.org/wiki/Redshift

In physics, redshift happens when light or other electromagnetic radiation from an object is ..... This is true for all electromagnetic waves and is explained by the Doppler effect. .... To derive the redshift effect, use the geodesic equation for a light wave, which is ..... Hubble's law follows in part from the Copernican principle .

earthsky.org/astronomy-essentials/what-is-a-redshift

Jun 4, 2012 ... Astronomers use redshifts to track the rotation of our galaxy, tease ... Police and astronomers both rely on a principle called the Doppler shift.

starchild.gsfc.nasa.gov/docs/StarChild/questions/redshift.html

The theory used to determine these very great distances in the universe is based on the ... This phenomenon was observed as a redshift of a galaxy's spectrum.

physicsnet.co.uk/gcse-physics/red-shift

Red Shift – big bang, wavelength, frequency, cosmic microwave background radiation, galaxies, Doppler effect.

www.esa.int/Our_Activities/Space_Science/What_is_red_shift

Dec 9, 2004 ... 'Red shift' is a key concept for astronomers. The term can be understood literally - the wavelength of the light is stretched, so the light is seen as ...

scienceblogs.com/startswithabang/2009/08/05/redshift-and-distance-in-the-e

Aug 5, 2009 ... Redshift. You see, whenever an atom or molecule emits light, it gives off that light at a very ... field (like close to a black hole), you have to use up energy to climb out of it. ... Again, it's expansion that's causing this redshift, and not motion. ..... Thank you so much for explaining redshift in such a simplistic way!

www.thoughtco.com/what-is-redshift-3072290

Mar 2, 2017 ... They use a property called a "redshift" to describe the motion of an object ... Its use in astronomy follows the same principles, but instead of ...

physics.stackexchange.com/questions/2269/does-red-shift-evidence-necessarily-imply-that-the-universe-started-from-a-singu

Dec 26, 2010 ... The redshift of galaxies could be explained by some other theory, .... as a redshift (a longer wavelength) because the standard rule we use to ...

study.com/academy/lesson/evidence-for-the-big-bang-theory-background-radiation-red-shift-and-expansion.html

Learn how cosmic background radiation, the red shift of. ... Science 102: Principles of Physical Science ... the prevalent one because no other model is as good at explaining everything in the universe. ... In the 1920s, Edwin Hubble used the 100-inch Hooker telescope in Southern California to study the Andromeda Galaxy.