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Topics - kasparovitch

Pages: [1]
1
Physics, Astronomy & Cosmology / If the Universe is tending towards disorder, how was it ordered to start with?
« on: 25/06/2016 13:53:11 »
The second law of Thermodynamics states that a system tends to disorganization, and thus the Universe so tends.

It's easy to notice that my house will become very disorganized in future if I do nothing, and perhaps my head, too.

This happens in the first instance because I have my house organized, otherwise it couldn't tend to disorganization.

My FIRST question is how can the Universe be organized first so that it will tend to disorganization as stated by the second law of Thermodynamics, thus first violating it?

This is my SECOND question:

It's a tenet that life is an exception to that law and this is accepted because the global entropy doesn't stop increasing because of the creation of law.

This tenet is evident given the paucity of life in such a huge universe. However, for it to be true that life can originate as long as it doesn't imply that entropy will decrease, then there must be a physical process that guaranteed that the global entropy won't decrease even when there are violations as the creation of life.

These are perhaps philosophical questions which I find very interesting unless something very basic is escaping me. This is challenge.


2
Physics, Astronomy & Cosmology / How much time has passed for a photon during the 8 minutes travel to Earth?
« on: 19/06/2016 12:28:28 »
Once at the speed of light time passes very much faster than at a slower speed:

One photon that leaves the sun now, how much time did pass for the photon, when at our time it reaches the Earth 8 minutes later?

 [xx(]

3
Physics, Astronomy & Cosmology / In a multiverse, can two universes overlap?
« on: 18/06/2016 22:53:29 »
To the best of my knowledge, immediately outside a univerese, like ours, there is nothing.

That is outside it there's no matter, no time, nor even dimensions.

Thus 2 universes cannot be referenced one to the other as there is no way to compute distances outside each of the universes. It only exists in each of them, not outside them.

However universes are know to be in expansion, at leat ours and perhaps all others, if there are any.

So my question is, can a universe in expansion ever overlap another?

Of course, this question admits first of all the multiverse hypothesis.

Cosmologists studying a map of the universe from data gathered by the Planck spacecraft have concluded that it shows anomalies that can only have been caused by the gravitational pull of other universes (In: Article by Rosie Taylor for the Daily Mail, 19 May 2013).

This is paradoxical in my opinion...


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