All Questions
Tagged with speed-of-light black-holes
121
questions
-2
votes
0
answers
37
views
Black hole production via light speed [duplicate]
As a test particle with rest mass approaches $c$ relativistic mass increases to infinity, does this mean that the energy required to continue the acceleration will create a black hole (as time also ...
- 31
2
votes
1
answer
161
views
When you are in a gravitational field, do object far away get physically closer to you as you get closer to the mass?
An observer A is close to a black hole and an observer B one light year away. They are both remaining at constant radial distance from the black hole. A is at 2 Rs away from the center of the black ...
- 171
0
votes
2
answers
83
views
How could I calculate the time it will take for light and mass to go towards a black hole and come back, to and from constant radial distances?
If you have a "perfect mirror" and a "perfect trampoline" at some constant distance outside a black hole's event horizon:
a) How would a shell observer at some distance farther ...
- 171
6
votes
2
answers
182
views
General relativity vs newtonian mechanics [duplicate]
My high school textbook briefly touched the topic of black holes, and this is how it defined them:
"Consider a spherical body of mass $M$ and radius $R $. Suppose,due to some reason the volume ...
- 294
2
votes
0
answers
61
views
How much of an observer's field of view will be black upon crossing an event horizon? [closed]
The aberration of light will cause an observer to still see a black hole as "distant" when the event horizon is crossed.
This means that if the observer looks directly toward the center of ...
0
votes
1
answer
107
views
Can the Schwarzchild radius for black hole be obtained from Newton's law of universal gravitation? [duplicate]
The universal law of gravitation of Newton calculate the intensity of gravitational force by the radius and mass of an body.. so in a black hole there is very much small radius and a large amount of ...
- 1
-1
votes
1
answer
50
views
If mass was to reach the speed of light it becomes infinitely heavy. Does this mean it has become a black hole singularly? [duplicate]
If mass reaches the speed of light, it becomes infinitely heavy. Does this mean that it has become a black hole singularly?
0
votes
0
answers
27
views
Black Holes and Gravity [duplicate]
We know that nothing including light can escape the gravitational pull of black hole. Now special relativity says that nothing travels faster than speed of light. Then how can effects of gravity due ...
1
vote
1
answer
152
views
Different Escape Velocities of Black Holes?
I am no physics major nor math major to this but merely an amateur cosmology enthusiast, so in my previous inquiries I wasn't able to find anything on the premise that if all black holes obviously ...
- 29
1
vote
4
answers
156
views
Why is light always used as an example while glorifying a black hole?
In almost any article, video, books on a black hole that I have come across, this is the common sentence I have read or heard:
"Nothin can escape a black hole, not even light."
But no one ...
1
vote
0
answers
49
views
Counterintuitive effect between event horizons of a 'binary black hole system'
I recently posted a question on my 'mobile phone profile' where I cannot post images and videos so I am trying to use this profile to solve my incomprehension of a gravitational-tidal effect that ...
- 467
2
votes
1
answer
98
views
How much time does it take for the gravitons generated by a black hole singularity to travel before exerting gravity forces on other celestial bodies?
It is known to all that the travelling speed of gravitons (the propagation speed of gravitational field) is not instant. So for black holes, the gravitons (the gravitational field) generated by the ...
0
votes
1
answer
117
views
There is no Penrose process for light right?
As far as I know, Wikipedia says the following about the Penrose Process:
"During the Penrose process, a working body falls (thick black line in
the figure) into the ergonomics area (grey area.) ...
- 43
1
vote
1
answer
72
views
Paradox approaching the speed of light/Planck temperature? [duplicate]
Paradox
If we accelerate an object (such as a proton) to closer and closer to the speed of light it will gain relativistic mass until eventually it gains so much (approaching the Planck Temperature) ...
- 39
0
votes
1
answer
52
views
Surpassing 70%c of spinning black holes - projection [closed]
And in some cases, the holes are spinning at an extremely rapid pace. The hole in one quasar, Einstein Cross, was spinning about as fast as theoretically possible -- 70 percent the speed of light
In ...
- 65