As Einstein showed us, light and matter and just aspects of the same thing. Matter is just frozen light. And light is matter on the move. How does one become the other? Albert Einstein’s most famous equation says that energy and matter are two sides of the same coin. But what does that really mean... Read more
The complete question was: Is it true that all matter is simply condensed energy? Does that mean that the Big Bang was pure energy and coalesced into matter? Physicist: Pretty much. If you can get…
Matter isn’t stored energy but t does have energy, called “rest energy.” What distinguishes matter-energy from other forms of energy is that all matter has inertia and is subject to the force of gravity when at rest as well as when in motion.
MATTER AND ENERGYThe entire observable universe, of which the Earth is a very tiny part, contains matter in the form of stars, planets, and other objects scattered in space, such as particles of dust, molecules, protons, and electrons. In addition to containing matter, space also is filled with ener... Read more
From a Quora answer: Contrary to the (very) popular belief, the Planck length has not been proven to be the smallest possible unit of space. But yes, it is a good IDEA, so was the idea of atoms and waves, once.
Got to say it’s sickening that people think time is just another dimension. IT does lots more than space could ever do. Just thank goodness we have both. Read this…
A Spacetime Surprise: Time Isn’t Just Another Dimension
Interesting…”As if the connection between entropy and the arrow of time is just a case of a starry eyed fanboy falling for a fashionable trend, as opposed to an undeniable and widely accepted fact about physics.”
(Phys.org)—An international team of researchers has conducted an experiment that shows that the arrow of time is a relative concept, not an absolute one. In a paper uploaded to the arXiv server, the team describe their experiment and its outcome, and also explain why their findings do not violate ... Read more
“Time is related to the space coordinates, but they are not equivalent. Pythagoras’s theorem treats all coordinates on an equal footing (see Euclidean space for more details). We can exchange two space coordinates without changing the length, but we can not simply exchange a space coordinate with time: they are fundamentally different.
It is an entirely different thing for two events to be separated in space and to be separated in time. Minkowski proposed that the formula for distance needed a change. He found that the correct formula was actually quite simple, differing only by a sign from Pythagoras’s theorem:
Where c is a constant and t is the time coordinate.[Note 2] Multiplication by c, which has the dimensions L T −1, converts the time to units of length and this constant has the same value as the speed of light.”
My question is: where does the negative sign come from ?”
In this article of Wikipedia, about spacetime interval, from which I post some extract here below, it is said (in bold the part concerning my question): “After Einstein derived special relativity formally from the (at first sight counter-intuitive) assumption that the speed of light is the same t.... Read more
There are 2 currently, and they don’t mix but so what? Who says they should fit each other. I get you. In one situation one set of laws wins, in another the other does. Just like jurisdiction in criminal laws and rules in languages. Scientists are intent on reductionalism at all costs but the Universe may not be that simple. And it evidently isn’t.
Relativity v quantum mechanics – the battle for the universe
Physicists have spent decades trying to reconcile two very different theories. But is a winner about to emerge – and transform our understanding of everything from time to gravity?
Good point. Or any laws at all. “The good news is that string theory has no free parameters. It has no dials that can be turned. It doesn’t make sense to ask which string theory describes our universe, because there is only one.”
There Are No Laws of Physics. Thereâs Only the Landscape. | Quanta Magazine
Scientists seek a single description of reality. But modern physics allows for many different descriptions, many equivalent to one another, connected through a
Penrose thinks that there is some real, physical “collapse” of a quantum superposition as objects grow big enough for gravity to become a significant part of the picture. Therefore: quantum mechanics might break down when confronted with gravity – when objects get big enough to “feel” significant gravitational force – so quantum mechanics needs modifying or reinterpreting.
General relativity is a theory of gravitation that was developed by Albert Einstein between 1907 and 1915. According to general relativity, the observed
When I was a depressed teenager in a naff town I would have volunteered for a cryo prison, if I got let out as soon as I reached the future. Better if you could convince your family to come with you though. Too late now.
Some science-fiction works don't risk putting their dangerous criminals in a Cardboard Prison, instead they freeze the criminals. It makes sense, they can't escape without outside help while in cold sleep, but you have to wonder if it's …
Time doesn’t really exist, its just an emergent phenomenon we believe we percieve – according to Julian Barbour. Well, that’s his solution to the problem of time in physics and cosmology. Yep it’s as simply stated as it is radical.
Same. interchangeable means the same in a way.
Gravity isn’t what you think though.
Matter is just stored energy that makes time go slower
(3 upvotes)Gravity is just time curving into space
(3 upvotes)Hard to find a definitive answer according to this https://www.askamathematician.com/2010/01/q-is-it-true-that-all-matter-is-simply-condensed-energy/
Matter isn’t stored energy but t does have energy, called “rest energy.” What distinguishes matter-energy from other forms of energy is that all matter has inertia and is subject to the force of gravity when at rest as well as when in motion.
True, this kid is telling us we thought it PUSHES us to the earth. Oh well.
And Gravity Creates Something From Nothing!
Agreed. gravity is just the curvature of spacetime. Newton would have loved this if only we could have told him.
They still teach that gravity is a fundamental force, when they know it isn’t. Enough already.
Matter is just stored energy that makes time go slower
(3 upvotes)Gravity is just time curving into space
(3 upvotes)Or is this just a math trick to get us out of the quantum problem? Not a great idea if you ask me.
From a Quora answer: Contrary to the (very) popular belief, the Planck length has not been proven to be the smallest possible unit of space. But yes, it is a good IDEA, so was the idea of atoms and waves, once.
Just when you thought you “got it”…
Got to say it’s sickening that people think time is just another dimension. IT does lots more than space could ever do. Just thank goodness we have both. Read this…
Interesting…”As if the connection between entropy and the arrow of time is just a case of a starry eyed fanboy falling for a fashionable trend, as opposed to an undeniable and widely accepted fact about physics.”
An international team of researchers has conducted an experiment that shows that the arrow of time is a relative concept, not an absolute one.
Just forward!
“Time is related to the space coordinates, but they are not equivalent. Pythagoras’s theorem treats all coordinates on an equal footing (see Euclidean space for more details). We can exchange two space coordinates without changing the length, but we can not simply exchange a space coordinate with time: they are fundamentally different.
It is an entirely different thing for two events to be separated in space and to be separated in time. Minkowski proposed that the formula for distance needed a change. He found that the correct formula was actually quite simple, differing only by a sign from Pythagoras’s theorem:
Where c is a constant and t is the time coordinate.[Note 2] Multiplication by c, which has the dimensions L T −1, converts the time to units of length and this constant has the same value as the speed of light.”
My question is: where does the negative sign come from ?”
its more than an idea, but i guess it was an idea before it was an equation. Brian Cox does well explaining this here https://www.youtube.com/watch?v=GkCWywO93b8
…. as mentioned in a “closer to truth” youtube video.
There are 2 currently, and they don’t mix but so what? Who says they should fit each other. I get you. In one situation one set of laws wins, in another the other does. Just like jurisdiction in criminal laws and rules in languages. Scientists are intent on reductionalism at all costs but the Universe may not be that simple. And it evidently isn’t.
Alpha, may give us a lawless universe.
Good point. Or any laws at all. “The good news is that string theory has no free parameters. It has no dials that can be turned. It doesn’t make sense to ask which string theory describes our universe, because there is only one.”
The laws of physics are just very compact restatements of everything that happens in the universe
(2 upvotes)There doesn’t have to be just 1 set of physical laws
(1 upvotes)Penrose thinks that there is some real, physical “collapse” of a quantum superposition as objects grow big enough for gravity to become a significant part of the picture. Therefore: quantum mechanics might break down when confronted with gravity – when objects get big enough to “feel” significant gravitational force – so quantum mechanics needs modifying or reinterpreting.
The next Einstein, and Wheeler, need to think SMALL…
Was a great idea… til quantum mechanics.
Gravity isn’t a force, and Einstein was wrong – just still the best explanation we have at the moment.
Can it uncurve though? I guess you would need something with negative mass in order to flatten it back out again, no?
Or just make them “think” they have served thousands of years- found this, which I read years ago. These drugs are a real time killer for sure.
reminded me of the penitentiary planet in Alien from a while back
When I was a depressed teenager in a naff town I would have volunteered for a cryo prison, if I got let out as soon as I reached the future. Better if you could convince your family to come with you though. Too late now.
Interesting, as Einstein once said: “Time and space are modes by which we think, and not conditions in which we live”
Time doesn’t really exist, its just an emergent phenomenon we believe we percieve – according to Julian Barbour. Well, that’s his solution to the problem of time in physics and cosmology. Yep it’s as simply stated as it is radical.