- #1
Grinkle
Gold Member
- 769
- 222
Any help appreciated. My thought experiment observations are marked with an *.
I leave my origin and am receiving a continuous beam of photons from my origin. I accelerate to some a speed of (just say) 0.01c. I don't intend any math, but just in case it ends up mattering.
* As I am accelerating to my travel velocity, I see the wavelength of the origin beacon red shift, and stabilize when my velocity stops increasing.
I travel for some long time, and my ship is approaching a very large black hole, tidal forces are so small I have no way to detect them or notice them within at least a light year of the event horizon.
I am still on the origin-side of the event horizon.
* At some point determined by how precisely I can measure the frequency of the origin beacon, I notice that the frequency is again red-shifting, even though I am not accelerating due to my own ships engine thrust. I am falling into the black hole gravity well.
* The rate of red shift of my origin beacon is increasing as I get closer to the black hole. I don't feel any different or notice any other macroscopic effects.
* If I have any other beacons to reference, outlying stars etc, I notice that they are accelerating away from me at a higher rate than my engine thrust accounts for.
My ship crosses the event horizon.
* Nothing calls my attention to this.
* I can reduce the rate of the red-shift, but I will now always only observe an ever increasing red-shift. I can never observe an origin beacon frequency with delta red shift of >=0, no matter how much I accelerate towards the origin beacon with any engine capable of any amount of thrust.
* Since my engine cannot accelerate my ship at c, my own personal event horizon was much further out than a photon's would be. When I crossed this closer-to-my-origin personal event horizon, nothing special happened, and when I crossed the farther-from-my-origin Schwartz-child EH, nothing special happened. There is no difference in these two horizons relevant to my own human experience. My own personal point-of-no-return determined by my engine power is really the point of most interest to me.
I leave my origin and am receiving a continuous beam of photons from my origin. I accelerate to some a speed of (just say) 0.01c. I don't intend any math, but just in case it ends up mattering.
* As I am accelerating to my travel velocity, I see the wavelength of the origin beacon red shift, and stabilize when my velocity stops increasing.
I travel for some long time, and my ship is approaching a very large black hole, tidal forces are so small I have no way to detect them or notice them within at least a light year of the event horizon.
I am still on the origin-side of the event horizon.
* At some point determined by how precisely I can measure the frequency of the origin beacon, I notice that the frequency is again red-shifting, even though I am not accelerating due to my own ships engine thrust. I am falling into the black hole gravity well.
* The rate of red shift of my origin beacon is increasing as I get closer to the black hole. I don't feel any different or notice any other macroscopic effects.
* If I have any other beacons to reference, outlying stars etc, I notice that they are accelerating away from me at a higher rate than my engine thrust accounts for.
My ship crosses the event horizon.
* Nothing calls my attention to this.
* I can reduce the rate of the red-shift, but I will now always only observe an ever increasing red-shift. I can never observe an origin beacon frequency with delta red shift of >=0, no matter how much I accelerate towards the origin beacon with any engine capable of any amount of thrust.
* Since my engine cannot accelerate my ship at c, my own personal event horizon was much further out than a photon's would be. When I crossed this closer-to-my-origin personal event horizon, nothing special happened, and when I crossed the farther-from-my-origin Schwartz-child EH, nothing special happened. There is no difference in these two horizons relevant to my own human experience. My own personal point-of-no-return determined by my engine power is really the point of most interest to me.