gravitational redshift

(redirected from Gravity shift)

gravitational redshift

(Einstein shift) The redshift of spectral lines that occurs when radiation, including light, is emitted from a massive body. In order to ‘climb out’ of the body's gravitational field, the radiation must lose energy. The radiation frequency must therefore decrease and its wavelength λ, shift by δλ toward a greater value. The redshift is given by
δλ/λ = Gm /c 2r

G is the gravitational constant, m and r the mass and radius of the massive body, and c is the speed of light. Gravitational redshift was predicted by Einstein's general theory of relativity and although extremely small has been detected, for example, in the spectra of the Sun and several white dwarfs. The redshift of the Earth's gravitational field has been determined very accurately using beams of radiation traveling upward through a tall building. Predicted and measured values agree very closely.

gravitational redshift

[‚grav·ə′tā·shən·əl ′red ‚shift]
(relativity)
A displacement of spectral lines toward the red when the gravitational potential at the observer of the light is greater than at its source.
References in periodicals archive ?
Failure to adapt swiftly could see the centres of economic gravity shift further away from the subcontinent.
If your feet hurt or you feel the centre of gravity shift has made it hard to walk in heels, then stop," said Moritz.
These issues are discussed at length in Gravity Shift.
Over the past several years we have seen the center of gravity shift from action at the federal level to movement at the local and state levels.
There was no centre of gravity shift as I worked my way through the fluffy chocolate mousse set on a cake base.
The global trends identified in the survey also show global power shifts -- a major economic gravity shift away from the mature economies towards emerging economies.
If so, Dobson's breezy predictions of a largely benign gravity shift that will accompany China's and India's emergence on the world stage could be a good deal more problematic than she leads readers to believe.
Williams, however, goes a bit further in line length, so that the pull of gravity shifts from the pentameter all the way to prose, stretching the rubber band until its elasticity gives out.
It may be effective to help regain a sense of balance - for often, as the body changes, its centre of gravity shifts, giving a sense of vertigo-type nausea.
A stationary bike is optimal, as it eliminates your risk of falling (during pregnancy, your center of gravity shifts and could affect your balance).