Recent content by Terrr

phinds, I am sorry, but the "Black holes can only get bigger" is presented in the article not as "effect in present" but as the consequence of the 2nd law of thermodynamics - that is, as a fundamental law of physics. I presume that's incorrect.

"Evaporation effects are very small" still contradicts the "Black holes can only get bigger" thing.

Lately I see these kinds of articles: https://mysteriousuniverse.org/2021/06/stephen-hawking-is-right-again-black-holes-can-only-get-bigger/?fbclid=IwAR3_nIKegH8DK_AzA1y5_SznqRtVf6ePQlJqPFaGRMIK3TvV4SqqzXt96Bg As far as I understood, it has been pretty much accepted that tiny black holes not...

What you're asking doesn't make sense. Atoms are not "made of 75% of hydrogen". That sentence of yours that I quoted is as nonsensical as it gets. I suggest walking into a book store, asking where the popular science section is, find the "physics" subsection and browse through to find something...

Such a simple concept that some are having really hard time understanding, as per OP.

In your opinion, at what speed do you cross EH and what is the gravitational acceleration at EH?

Not if your speed is infinitesimally close to c. According to the formulas, it is.

1. "As you approach infinite number of members of the sequence, the sum approaches 1." 2. "As you approach the event horizon, the speed approaches c." Since you cannot ever REACH infinite number of members in the sequence, the sum never reaches 1. If you posit that you cannot ever REACH the...

You need infinite acceleration in order for a mass-possessing object to reach c. How fortunate that the gravitational acceleration at the event horizon is infinite.

That would be correct in a Newtonian gravity system. The event horizon and anywhere close to it isn't. Let me put it this way - for the biggest black hole found so far (18B solar masses) according to Newton's equations the gravitational acceleration at the event horizon is only around 100g. But...

For the purposes of figuring out what the subjective time is on that ship that it takes to get to the singularity, "speed arbitrarily close to, yet still less than c" means you get wiped out instantly. Or "in time arbitrarily close to, yet still more than 0" if you prefer. Right?

I read it. I still don't understand it. "As you approach the EH, your speed approaches c" - is that a correct statement or not? If it is correct, then you either never reach EH or your speed actually gets to c. If neither of those is correct, what is the answer to: "At what speed do you...

Well, the radius would be 5 days. So - if you were doing 0.999999995c, it would be 43 seconds (not taking into account further acceleration). And if you were doing 0.9999999999995 etc... But the whole point of "approaching c as you approach the event horizon" is that when you do REACH it, your...

I often see, when people talk about black holes, someone claim that since there are no huge tidal effects at the supermassive black hole's event horizon, that someone on a spaceship falling into such a black hole would not be destroyed and would survive, continuing inwards, until, after some...

Of course they are significant. Try taking them out - the number changes.