Physicists Discussions (22)

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Schrodinger's cat has been caught on quantum film

(Image: Gabriela Barreto Lemos) Schrödinger's cat  has been immortalised in a portrait created by one of quantum theory's strangest conseq…

Started by Dr. Terence Meaden

0 Aug 29

God said, “div D = ρ, div B = 0, curl E = - ðB/ðt, curl H = J + ðD/ðt,” and there was light.

God said, “div D = ρ, div B = 0, curl E = - ðB/ðt, curl H = J + ðD/ðt,” and there was light. This ingenious statement by atheist-physicist…

Started by Dr. Terence Meaden

26 Aug 23
Reply by Dr. Terence Meaden

Cycles of Time by Roger Penrose

Penrose puts forth an old idea, that the end of our universe is the start of a new one, in a beautiful new way.  That is, eventually the un…

Started by Luara

0 Dec 7, 2012

Time dilation at the event horizon of a black hole

As one falls into a black hole a person, or object, would experience a greater and greater time dilation caused by the gravitational field.…

Started by Mark Stanbrook

4 Sep 2, 2012
Reply by Vidur Kapur

String theory, background-independence, and supersymmetry

Is string theory background-dependent? If so, doesn't it contradict relativity and tell us something's not right with string theory? Also,…

Started by Valles Marineris

5 Apr 3, 2012
Reply by Jessica Berman

So what happened before the big bang?

Is this a silly question or one that physics shouldn't ask? Is the universe just one of an infinite multiverse . Has there been big bangs f…

Started by mrmister

10 Feb 19, 2012
Reply by thewoodenwand

Probably lazy of me to ask here - but what happens to matter/energy at absolute zero?

Warning: non-physicist in need of instruction asking a question out of deep ignorance that, very likely, has a simple answer. It seems to…

Started by Howard S. Dunn

11 Feb 19, 2012
Reply by thewoodenwand

http://www.isec.info/

Our best hope for a cheap and safe vacation in Space as well as the future of humanity. Do you know of anything else that can match its po…

Started by AtheistTech

1 Feb 19, 2012
Reply by thewoodenwand

My little bottle of photons

Here is a question my kid asked (13), I thought it was a good one. Can we capture photons in a bottle and release them at a later time? W…

Started by Mister Harvey

15 Feb 19, 2012
Reply by thewoodenwand

Physics enthusiast asks a question of any physicist.

A month ago or so, an idea popped into my head. Here it is in a nutshell: If you send a space device or ship in an orbit that takes it to d…

Started by AtheistTech

13 Feb 19, 2012
Reply by thewoodenwand

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