How gravity works? How can some particle go up to and grab hold of an atom and go… “here, buddy, come over this way with me, opposite to the orientation I was travelling”?
In: 6
That’s not how gravity works.
The massive object (actually any object with massenergy because E=mC^2 ), curves the space around it. This curvature causes anything (light or particle) that wanders by to take on a new definition of “go in a straight line”, which looks curved to outside observers.
Also, it’s not how gravity works 2:
both particles attract one another. so the particle is moving towards the atom, just as the atom is moving towards the particle.
The gravity of you attracts the earth, just as the gravity of earth attracts you.
Everything in the universe is always moving “forward”, even if some or all of that “forward” is in time. It turns out that the direction of “forward” tends to be toward massive things.
Also, it’s not how gravity works 3:
A good analogy to better understand the curvature of space-time is to imagine traveling on a sphere. If you and a friend set off, walking parallel to eachother on Earth for example, because the surface is curved your paths will eventually cross. Let’s say for this example you friend starts at the equator facing east, and you start at the tropic of cancer, also facing perfectly east. Your friend will stay on the equator, but due to the curvature of the Earth, as you continue walking you’ll start “veering off” the tropic, towards the equator, because the tropic isn’t actually the straight path.
Curved space works much the same way, but with time instead of distance. As time passes, an object within a gravity field won’t stay in the same place. It will begin accelerating towards the center of the field.
One particle is making a dent in space. A dent so big that a straight line is no longer a straight line, it’s bending space so much that straight lines get curved around it, and that things quite some distance from it are still inside that dent.
The bigger / heavier the particle, the huger the dent.
Now the other particle is also trying to move “uphill” out of that dent so it will slow, or even can’t get out and is falling back towards the first particle because of that dent being so big.
Gravity isn’t “a thing” like you’re imagining. It’s literally a dent in space, that’s causing everything near it to “fall down” the dent towards the heavy object.
And a black hole is an object so heavy, that the dent is SO extreme, that nothing in its range (event horizon) can ever escape it, even light.
Gravity is a dent in space, and the thing that causes that dent is the “weight” of particles themselves.
is this diagnosis correct?
imagine space time like a trampoline
the surface is flat if no objects r on it
if an object is on it then the surface of space time will sink and stretch around the object
imagine 2 objects on the trampline spacetime
one object is heavy bowling ball and it makes trampoline stretch and sink around bowler ball allot
now imagine the other object is ping pong ball, only sinks n stretches spacetime a tiny bit
but the pingpong ball will get closer to ballerball because of the deeper stretch n sink formed by the bowlingball
the pingpong is being pulled torwards ballerballs by ballrballs gravity
if the question you’re asking is “why does a particle attract another particle” the answer is we don’t know, but we think it’s because mass has a type of weight that presses into the fabric of time, bending time around it.
My question is, though, in the way that gravity in the 3rd dimension pulls a bowling ball down into a stretched out bed sheet, what is the 4th dimension “gravity” that is pulling a particle down into the stretched out sheet of time?
Let me clarify something for you. Einstein in 1915 taught us that Gravity is not actually a tangible force. Instead, when you place a big massive planet or star in the middle of space, it actually bends the space around it. In a sense it creates a big dip or well in space. If you enter this dip, then you’ll fall into it. That “falling” is what we call Gravity. It’s not actually anything pulling or pushing you. It’s you falling into a gravity well caused by the bending of space. Einstein figured this out in 1905 and finished it in 1915.
Well, in the 1920’s a new and very very accurate branch of science was discovered, called Quantum Mechanics. It changed our understanding of a lot of things in the universe and how they work. It has never failed scientists. Any time scientists have a problem, they use Quantum Mechanics to figure it out. Mostly…
There are some things that Quantum Mechanics tells us should be true, but we haven’t discovered some of those things yet. One of those things is a different way that Gravity works. A way that would make Einstein wrong about his theory of Gravity. This new version of Gravity is called Quantum Gravity.
Quantum Gravity states that the attractive “force” of Gravity isn’t cause by “falling” into a gravity well like Einstein said. Instead there are super tiny particles called Gravitons that kinda act similar to the way you asked in your question using particles. These Graviton particles carry the force of gravity if you will. In other words, the attractive force of Gravity comes from the interaction of these particles.
This theory of Quantum Gravity has not been discovered yet because we have not discovered the Graviton particle yet. So for now, we use Einstein’s explanation of space bending and causing things to fall in.
Keep in mind. I’m supposed to explain to you like you’re 5. Which means I had to simplify a lot of this and leave some stuff out
Gravity is an illusory phenomenon, an artefact of time dialation gradients that form around all matter.
The closer you are to the centre of a mass, the slower time proceeds (limited by the magnitude of the mass). Differences in time-rate from one distance to the next form a time gradient. Masses of non-zero size extend spatially across each other’s time gradients. More distant parts of each object proceed through time slightly faster than proximal parts. The effect of these differences is to bias motion vectors of each mass toward their mutual barycentre, the combined spatial centre of both masses.
The tendency for objects’ motion vectors to trend toward the barycentre produces the motion to which we ascribe the term “gravity.”
See this video:
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