What does cosmological redshift do to light

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SUMMARY

Cosmological redshift is a phenomenon where the wavelengths of light are stretched as the universe expands, leading to longer wavelengths. This effect does not slow down light, as the speed of light remains a fundamental constant in a vacuum. Redshift can shift visible light from the blue spectrum to infrared, but it does not inherently convert light into infrared; it merely extends the wavelength. The discussion clarifies that redshift affects the wavelength without altering the intrinsic speed of light.

PREREQUISITES
  • Understanding of cosmological principles
  • Familiarity with the electromagnetic spectrum
  • Basic knowledge of light properties
  • Awareness of the concept of redshift in astrophysics
NEXT STEPS
  • Research the implications of redshift on the observable universe
  • Learn about the electromagnetic spectrum and its regions
  • Study the Doppler effect and its relation to light
  • Explore the concept of cosmic expansion and its effects on light
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Astronomers, astrophysics students, and anyone interested in understanding the effects of cosmic phenomena on light and the universe.

whatphysics
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I understand it's definition but i am unsure how it affects light.
Does it slow light down? (is this even possible?)
Does it stretch light's wavelength?
Does it convert light into infrared?
Does it make light brighter or dimmer?

hmm. thank you for your kind help!
 
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This, "Does it stretch light's wavelength?" is correct and it is not just definition it happens. As approaching siren is shriller than the receding one.
 
Let'sthink said:
This, "Does it stretch light's wavelength?" is correct and it is not just definition it happens. As approaching siren is shriller than the receding one.
Is it possible for the cosmo redshift to slow down light?
 
Light's speed cannot be slowed down. It is a fundamental constant of nature. Light travels with a lower speed in other media.
 
Let'sthink said:
Light's speed cannot be slowed down. It is a fundamental constant of nature. Light travels with a lower speed in other media.
That's what I thought too alright thank you so much! have a nice day!
 
whatphysics said:
Does it convert light into infrared?
redshifting means the wavelengths are stretching and so getting longer.
It doesn't have anything specifically to do with infra red.
Visible light in the blue part of spectrum could be redshifted to the yellow region, that is also redshift.
Stretch it more and it will go through orange then red into infra red, but there's nothing special about that.
Stretch again and it's into the microwave region, it's all redshift no matter what wavelength is the end result..
 
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