### Why is the time dilation in a gravitational field equivalent to a gravitational redshift?

## Why is the time dilation in a gravitational field equivalent to a gravitational redshift?

directly and also through the gravitational redshift of light. Time dilation causes light to vibrate at a lower frequency within a gravitational field; thus, the light is shifted toward a longer wavelength—that is, toward the red.

**Is redshift time dilated?**

The gravitational redshift also implies time dilation: Clocks in gravitiational fields run more slowy than clocks in free space. The frequency of an atom’s spectral lines are used as the fundamental time reference: This is how ‘atomic’ clocks work.

**Do clocks run slower at higher altitudes?**

First, when two clocks are subjected to unequal gravitational forces due to their different elevations above the surface of the Earth, the higher clock—experiencing a smaller gravitational force—runs faster. Sure enough, the higher clock ran at a slightly faster rate than the lower clock, exactly as predicted.

### Can gravity cause a redshift?

Einstein’s theory of general relativity predicts that the wavelength of electromagnetic radiation will lengthen as it climbs out of a gravitational well. This corresponds to an increase in the wavelength of the photon, or a shift to the red end of the electromagnetic spectrum – hence the name: gravitational redshift.

**Do gravitational waves get redshift?**

Yes, gravitational waves can be redshifted.

**Is redshift the Doppler effect?**

Redshift is an example of the Doppler Effect. As an object moves away from us, the sound or light waves emitted by the object are stretched out, which makes them have a lower pitch and moves them towards the red end of the electromagnetic spectrum, where light has a longer wavelength.

## What is the evidence for time dilation?

Physicists have verified a key prediction of Albert Einstein’s special theory of relativity with unprecedented accuracy. Experiments at a particle accelerator in Germany confirm that time moves slower for a moving clock than for a stationary one.

**How is the magnitude of a gravitational redshift expressed?**

In astronomy, the magnitude of a gravitational redshift is often expressed as the velocity that would create an equivalent shift through the relativistic Doppler effect.

**When does the rate of time dilation occur?**

Time dilation is a very simple occurrence and can only happen if the speed of light is the same for everyone in the same media. The rate of time that’s perceived by an observer may change with respect to an object which approaches the speed of light.

### Is the gravitational redshift a classical test of general relativity?

Observing the gravitational redshift in the solar system is one of the classical tests of general relativity. Measuring the gravitational redshift to high precision with atomic clocks can serve as a test of Lorentz symmetry and guide searches for dark matter .

**What does the term Δt relative mean in math?**

Δt_relative refers to the time which has passed. It’s measured by the observer who’s traveling Δt refers to the time which has passed as measured by the observer who isn’t moving γ refers to the Lorentz factor.

Why is the time dilation in a gravitational field equivalent to a gravitational redshift? directly and also through the gravitational redshift of light. Time dilation causes light to vibrate at a lower frequency within a gravitational field; thus, the light is shifted toward a longer wavelength—that is, toward the red. Is redshift time dilated? The…