Cerenkov's latest activity
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Cerenkov replied to the thread High School A question on the geometry of black holes.Yes, I read it. Given the turn of events in this thread I think it best if I take up Bandersnatch's idea and read up about the concepts... -
Cerenkov replied to the thread High School A question on the geometry of black holes.Thanks Bandersnatch, Umm... if questions arise from the reading of this (as I'm sure they will) what's the best policy? Bring those... -
Cerenkov reacted to Bandersnatch's post in the thread High School A question on the geometry of black holes with
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Try this https://www.physicsforums.com/insights/inflationary-misconceptions-basics-cosmological-horizons/ It's not specifically about... -
Cerenkov reacted to Parthib Roy's post in the thread High School A question on the geometry of black holes with
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I would like to second Cerenkov's suggestion here. As another member who finds themselves reading these threads with a mix of... -
Cerenkov replied to the thread High School A question on the geometry of black holes.Hello and thank you PAllen. You reply has touched upon another aspect of singularities that I've been grappling with. I'm... -
Cerenkov replied to the thread High School A question on the geometry of black holes.Thank you Peter, I appreciate that you are doing your best here, being rigorously accurate in your descriptions. But please consider... -
Cerenkov replied to the thread High School A question on the geometry of black holes.Ibix, If I keep referring to the initial singularity as point-like, that'll be because the first, unmodified diagram which I posted... -
Cerenkov replied to the thread High School A question on the geometry of black holes.It's late here and I must log off. But I thank you both for your patience and perseverance. Until tomorrow. :smile: -
Cerenkov replied to the thread High School A question on the geometry of black holes.That's helpful... I think. Couldn't the blue line that I placed at the extreme left hand edge of the modified diagram be considered as... -
Cerenkov replied to the thread High School A question on the geometry of black holes.Hmmm... to properly understand what you meant in those two posts I'd first have to understand what proper distance and comoving distance... -
Cerenkov replied to the thread High School A question on the geometry of black holes.Yes, forgive my loose usage of the word 'see'. I'm aware that 'seeing' through the opaque plasma of the very early universe is not... -
Cerenkov replied to the thread High School A question on the geometry of black holes.Ah... now I might be getting it. Are you saying that any finite volume of our universe will have an initial singularity which is... -
Cerenkov replied to the thread High School A question on the geometry of black holes.Yes, I tried to capture what you've since said Peter by converting the point like singularity of the original diagram into a spacelike... -
Cerenkov replied to the thread High School A question on the geometry of black holes.Thank you Peter, Let me see if I'm following you about our observable universe having a point-like singularity. An observer in... -
Cerenkov replied to the thread High School A question on the geometry of black holes.My thanks to Peter Donis and Ibix for their help. The following diagram seems to show that the universe originated from a point-like...


