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 .

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

Red Shift – big bang, wavelength, frequency, cosmic microwave background ... The big bang theory is that the universe began from a very small initial point.

www.space.com/25732-redshift-blueshift.html

May 2, 2014 ... Redshift and blueshift describe how light changes as objects in ... When an object moves away from us, the light is shifted to the red end ... redshift does happen — exactly in line with Einstein's theory of general relativity. ... Our Content · Licensing & Reprints · Terms of Use · Copyright Policy · Privacy Policy.

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

Jun 4, 2012 ... Astronomers use redshifts to track the rotation of our galaxy, tease out ... as the cosmological redshift was the first piece of the Big Bang theory ...

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

Scientists must move from direct observation to using observations in conjunction with a theory. The theory used to determine these very great distances in the ...

www.angelfire.com/nt/fairytales/redshift.html

The Doppler Effect is used to explain the Red Shift. The Doppler Effect ... is expanding! The idea that the universe is expanding supports the big bang theory.

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 few ... If you're deep in a gravitational 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. ...... What is Big Bang Theory?

hyperphysics.phy-astr.gsu.edu/hbase/Astro/redshf.html

Red Shift. The light from distant stars and more distant galaxies is not ... this velocity as a fraction of the speed of light and to use a parameter z defined by: ...

www.esa.int/Our_Activities/Space_Science/What_is_red_shift

Dec 9, 2004 ... By continuing to use the site you are agreeing to our use of cookies. ... What is ' red shift'? ... 'Red shift' is a key concept for astronomers. ... light is stretched, so the light is seen as 'shifted' towards the red part of the spectrum.

coolcosmos.ipac.caltech.edu/cosmic_classroom/cosmic_reference/redshift.html

Astronomers often use the term redshift when describing how far away a ... However, the terms redshift and blueshift are still used to describe a Doppler shift in ...