Is the Doppler effect responsible for redshifted photons and time dilation?

In summary, the conversation discusses the concept of redshifted photons and their potential impact on the behavior of objects. It is suggested that if photons are redshifted due to transferring energy to dark energy, they may not necessarily cause blurring of objects because dark energy may not have momentum itself. However, it is noted that redshifted photons would still exhibit time dilation over large distances. The conversation also touches on the idea that dark energy is related to gravitational energy and that the Doppler effect is the most likely explanation for red or blue shift.
  • #1
kurious
641
0
If photons get redshifted on their way to the Earth by transferring
energy to the dark energy of the cosmos their momenta would not be
changed and cause blurring of objects because dark energy may not have momentum itself and so classical behaviour that would cause blurring would not necessarily occur.
Redshifted photons would still exhibit time dilation over large
distances.
Any thoughts on this?
 
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  • #2
kurious said:
If photons get redshifted on their way to the Earth by transferring energy to the dark energy of the cosmos ...
To procede in funny :smile: :biggrin: tone:Than the dark energy of the cosmos is nothing else than the gravitational energy of the same. :tongue2:
 
  • #3
photons can only be emitted and absorbed in their entirety [re: Plancks quanta theory]. the doppler effect is the simplest and most obvious explanation for red [or blue] shift.
 

What is tired light and redshift?

Tired light and redshift are two concepts that are often discussed in relation to the expanding universe and the observation of distant galaxies. Tired light refers to the idea that light from distant galaxies may lose energy and appear redder as it travels through space, while redshift refers to the observed phenomenon of light from distant galaxies being shifted towards the red end of the spectrum.

What causes tired light and redshift?

Tired light is thought to be caused by the interaction of light with matter and radiation as it travels through the expanding universe. This interaction can cause the light to lose energy and appear redder. Redshift, on the other hand, is caused by the Doppler effect, where the motion of a distant galaxy away from us causes the wavelength of its light to appear longer and shift towards the red end of the spectrum.

How do tired light and redshift support the theory of an expanding universe?

The observation of tired light and redshift in distant galaxies supports the theory of an expanding universe because it suggests that galaxies are moving away from each other, causing the light from them to be redshifted. This is consistent with the idea that the universe is expanding and all galaxies are moving away from each other.

Are tired light and redshift the only explanations for the observed redness of distant galaxies?

No, there are other explanations for the observed redness of distant galaxies, such as the effects of dust and gas in between the observer and the galaxy, or the possibility of intrinsic redshift caused by the motion of stars and galaxies within the galaxy itself. However, tired light and redshift are the most commonly accepted explanations based on current evidence.

What are the implications of tired light and redshift for our understanding of the universe?

Tired light and redshift have significant implications for our understanding of the universe, as they provide evidence for the expanding universe and the Big Bang theory. They also help us to measure the distance and age of distant galaxies and provide insights into the composition and structure of the universe. However, there is ongoing research and debate about the exact mechanisms behind tired light and redshift, and their full implications are still being explored.

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