Why do black holes appear to be eternal red instead of black?

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Discussion Overview

The discussion revolves around the nature of black holes and the phenomenon of redshift, particularly questioning why black holes might appear to be "eternal red" rather than black. Participants explore concepts related to gravitational effects, the behavior of light near black holes, and implications for cosmology.

Discussion Character

  • Exploratory
  • Debate/contested
  • Technical explanation

Main Points Raised

  • Some participants suggest that as material approaches the black hole's event horizon, it experiences extreme time dilation, leading to a redshift of light that could imply black holes are not truly black but rather "eternal red."
  • There are questions about the clarity of the initial post, with some participants requesting more precise questions and clearer language.
  • One participant notes that gravitational redshift is distinct from cosmological redshift, indicating a need for clarity in definitions and concepts.
  • Another participant argues that redshift occurs across all frequencies, not just visible light, and emphasizes that the term "redshift" is used due to its effect on visible light.
  • There is a mention of the accelerated decay of material in black holes and its relation to the release of radiation, which may contribute to the perception of redshift.

Areas of Agreement / Disagreement

Participants express varying levels of understanding and clarity regarding the concepts discussed. There is no consensus on the implications of redshift in relation to black holes, and multiple competing views remain regarding the nature of redshift and its effects.

Contextual Notes

Some posts indicate a lack of clarity in language and expression, which may affect the understanding of the concepts being discussed. There are also unresolved distinctions between different types of redshift and their implications.

hamson
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The more time away from the gravitational field near the faster, so those who fall into the black hole horizon material time will be very fast, from the outside in acceleration seems to matter, the decay material gradually disappear, and the material in the horizon to listen to the light should happen is red shift, and the wavelengths is an infinite long, then black holes should not black, and eternal red.Now that the universe every galaxies have a central black hole giant, so watching galaxies found redshift whether these reasons?
 
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hamson said:
The more time away from the gravitational field near the faster, so those who fall into the black hole horizon material time will be very fast, from the outside in acceleration seems to matter, the decay material gradually disappear, and the material in the horizon to listen to the light should happen is red shift, and the wavelengths is an infinite long, then black holes should not black, and eternal red.Now that the universe every galaxies have a central black hole giant, so watching galaxies found redshift whether these reasons?

hamson, Welcome to Physics Forums!

There are many well-qualified members here ready and willing to help you find answers to your questions about black holes. But I cannot understand your post. Your first sentence is 71 words long and seems to not contain any question. Will you please write each question you want to ask?
 
hamson said:
The more time away from the gravitational field near the faster, so those who fall into the black hole horizon material time will be very fast, from the outside in acceleration seems to matter, the decay material gradually disappear, and the material in the horizon to listen to the light should happen is red shift, and the wavelengths is an infinite long, then black holes should not black, and eternal red.Now that the universe every galaxies have a central black hole giant, so watching galaxies found redshift whether these reasons?

Is English your primary language?
 
Pengwuino said:
Is English your primary language?

no!I just want to express some physics of new idea want to express.
 
hamson, Welcome to Physics Forums again!

This section (cosmology) may not be the right place to post new ideas. Be sure to read the Forum guidelines before posting.

Make yourself a list of subjects you are interested in. Then use that list as a guide for writing each question. Please try to write out your questions in correct English, if possible. Keep them simple with only ONE subject per question. Be sure to include references that you use.
 
Gravitational redshift is not a component of cosmological redshift.
 
Chronos said:
Gravitational redshift is not a component of cosmological redshift.

Well it might be, but then your cosmological assumptions need to change.
 
The use of red here implies that visible light is the stopping point of the process, and that it would stay red, instead of continuing to IR, etc.
 
There is no implication redshift only occurs at visible light frequencies. It occurs at all frequencies. It is termed redshift because that is the effect it has on visible light frequencies.
 
  • #10
Chronos said:
There is no implication redshift only occurs at visible light frequencies. It occurs at all frequencies. It is termed redshift because that is the effect it has on visible light frequencies.

I know.I mean the decay of Material in Black hole is accelerated.It's release of radiation is stretched back infinite.
 

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