Understanding Field Shift: The Doppler Effect and the Speed of Gravity Explained

[atom888]

Wiki

An observed redshift due to the Doppler effect occurs whenever a light source moves away from the observer, corresponding to the Doppler shift that changes the perceived frequency of sound waves

In the context of classical theories of gravitation, the speed of gravity refers to the speed at which a gravitational field propagates. This is the speed at which changes in the distribution of energy and momentum result in noticeable changes in the gravitational field which they produce

In 1900 Hendrik Lorentz tried to explain gravity on the basis of his Lorentz ether theory and the Maxwell equations. After proposing (and rejecting) a Le Sage type model, he assumed like Ottaviano Fabrizio Mossotti and Johann Karl Friedrich Zöllner that the attraction of opposite charged particles is stronger than the repulsion of equal charged particles. The resulting net force is exactly what is known as universal gravitation, in which the speed of gravity is that of light

If speed susceptible to Doppler's effect. Why shouldn't field since we're so determine they have a speed?

 

[russ_watters]

You mean a gravitational field and gravitational waves? I suppose gravitational waves would show doppler shift.

 

[Entropia]

Firstly, it is important to note that the Doppler effect is a phenomenon that occurs due to relative motion between a source and an observer. In the case of light, the frequency of the light waves appears to change when the source is moving away from the observer, resulting in a redshift. This effect is not dependent on the speed of the source, but rather on the relative motion between the source and the observer.

In the context of gravity, the speed of gravity refers to the speed at which changes in the distribution of energy and momentum result in changes in the gravitational field. This speed is not affected by the relative motion between the source and the observer, as it is determined by the properties of space-time itself.

The concept of the speed of gravity is still a topic of debate and ongoing research in the field of physics. While some theories suggest that it is equal to the speed of light, others propose that it may be infinite or even slower than the speed of light. However, regardless of its actual value, the speed of gravity is not susceptible to the Doppler effect as it is not determined by the relative motion between objects.

In conclusion, the Doppler effect and the speed of gravity are two distinct phenomena that cannot be directly compared. While the former is affected by relative motion, the latter is a property of space-time and is not affected by the motion of objects.