omnia mea mecum fero
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omnia mea mecum fero
όλα τα δικά μου τα κουβαλάω πάνω μου
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[VIDEO] Gravity - From Newton to Einstein - The Elegant Universe

From the NOVA PBS series "THE ELEGANT UNIVERSE', host Brian Greene guides us through Newton's discovery of gravity to the explanation of it, through Einsteins Theory of Relativity.

 

Articles about ASTRONOMY: http://www.scoop.it/t/science-news?tag=astronomy

 


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Looking at quantum gravity in a mirror

Looking at quantum gravity in a mirror | omnia mea mecum fero | Scoop.it
Einstein's theory of gravity and quantum physics are expected to merge at the Planck-scale of extremely high energies and on very short distances. At this scale, new phenomena could arise.

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Looking at quantum gravity in a mirror

Looking at quantum gravity in a mirror | omnia mea mecum fero | Scoop.it
Einstein's theory of gravity and quantum physics are expected to merge at the Planck-scale of extremely high energies and on very short distances. Now scientists have proposed a new quantum experiment using Planck-mass mirrors.

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String theory: From Newton to Einstein and beyond | plus.maths.org

String theory: From Newton to Einstein and beyond | plus.maths.org | omnia mea mecum fero | Scoop.it

To understand the ideas and aims of string theory, it's useful to look back and see how physics has developed from Newton's time to the present day. One crucial idea that has driven physics since Newton's time is that of unification: the attempt to explain seemingly different phenomena by a single overarching concept. Perhaps the first example of this came from Newton himself, who in his 1687 work Principia Mathematicae explained that the motion of the planets in the solar system, the motion of the Moon around the Earth, and the force that holds us to the Earth are all part of the same thing: the force of gravity. We take this for granted today, but pre-Newton the connection between a falling apple and the orbit of the Moon would have been far from obvious and quite amazing.


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