How far can we go in our ambition to finding the smallest particle in the universe? And how far can we go in our ambition to know how big universe is
What are your opinions?
What are your opinions?
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Planck units define the minimal sizes for time, length, etc. These units are the least one can get that is applicable within science. There is no evidence that something smaller might not exist but this seems to be an area of supposition, not science.
Is this "emergence" what I read about where the sum of the parts may not equal the whole?There are two major experimental results the Bell's inequality test and the quantum eraser delayed choice experiments which effectively show that either space or time is an emergent phenomenon that is not fundamental.
That's interesting. Is GR applicable only when the sum of the parts do equal the whole? [Assumes my prior statement is correct.]... which lends weight towards time being more fundamental than space. (In which case the construct of spacetime in GR emerges as a consequence of time acting as a generator of space through some mechanism).
Is there a chance any such model could be experimentally tested directly, or just highly unlikely?...To go smaller [than the Plank scale] we need a framework for quantum gravity there are a few prospective candidates but all of them have problems unifying General Relativity(GR) and Quantum Field Theory(QFT) particularly in the form of renormalization terms which blow up to infinity.
I'm really sorry for this mistake... I didn't noticed it before.Talking about the extremely high, I only know that the radius of the observable Universe is about 45 light years...
We knew it was only a nit and not a mistake in judgement.I'm really sorry for this mistake... I didn't noticed it before.
The observable Universe has a radius 45 BILLION light years.