/sci/ - Science & Math

what leads you to this conclusion? no, it is not infinite

>>11962516

It's weird because it sounds infinite but I'm sure that it's not. How is this explained by general and special relativity?

>>11962516

We are right now being pushed by gravity in direction to the center of Earth. Energy is being added on us. So something is loosing energy, What is losing energy?

>>11962505
Yes. Mass makes gravity but you still need something to move, and you still have to find a way to get it up high. Rain water into a lake dam works well but we exploit the rain cycle. The energy it takes for us to raise and object is never less then the output it can give from gravity’s pull. In vs. out remains constant consideration. Gravity is almost an illusion because it’s a distortion of space.

>>11962520
>We are right now being pushed by gravity in direction to the center of Earth
yes, and the earth is pushing us away with the same amount of force
>something is loosing (Sic) energy
no, nothing is being dissipated since no energy is being expended by just standing on the earth's surface

continue asking questions and I'll answer them

>>11962532
>>11962539

This is impossible, something is losing energy. When something from space starts to move against Earth thanks to gravity there is energy being added. This energy comes from somewhere. It can be a magical force...

>>11962557
?
the object moves towards earth
earth moves towards the object
the total momentum of the two bodies remains 0, so no energy was added

>>11962559

No dude the body is in constant movement in space than it starts to move faster thanks to the gravitational force.

I'd like to listen to an answer from someone who really understands general and special relativity.

>>11962557
gravity is not a one way thing

>>11962564
I'm a physics PhD you absolute monkey
you're conflating so many ideas that there's no point in trying to respond

The gravitational potential energy is large but finite. When something starts accelerating (gaining energy) due to the gravity of something else, the something else recieves a corresponding amount of energy with a vector pointing in the opposite direction. This energy is not created ex nihilo, it is taken from the gravitational potential energy field which decreases correspondingly. Total energy is a constant value.
At least in newtonian gravity.
In relativity, total energy is conserved in everything except for changes in the metric volume of spacetime (cosmic inflation) which adds new energy into the system without giving a shit about conservation laws. Extensive observations and calculations over the last century has provided us with an excellent model of how inflation works and exactly what it does numerically, and we can solve any problem involving it mathematically.
The only remaining question is thus: why is there any inflation at all?

>>11962569

Your PhD isn't giving me any answer.

Let's use the example of an asteroid that is moving at constant speed then it is passing close to Jupiter. Gravitational force gives it speed but the asteroid doen't touch the planet.

So now the asteroid is in space again moving faster. Something has spent energy making the asteroid moves faster. Agree?

Now where is the energy coming from?

U mad bro?

This force that pushed the asteroid

>>11962578

Good answer.

>>11962584
ay dios mio
just finish first year physics

>>11962569
>I'm a physics PhD
Is gravity truly known to be curvature in spacetime or is that a dumbed down version of what we know?

>>11962588

Strange fellow who doesn't answer questions and say that is PhD

I don't give a fuck for your shitty degree, I see you as an inferior being. Now fuck off.

>>11962599
if you've read a highschool physics textbook you'd understand this question. stop shitting up this board and acting like you know anything because you've read introductory wikipedia pages. it's embarrassing and we can see right through you

>>11962598
Gravity is one of the least understood forces, in the context of other forces. Once we have a unified theory of gravity and QM you'll have a better answer. The curvature is likely correct.

Just one guy answered and I still see no point.

Something has lost energy making the asteroid move in example above.

I'd like to listen more answers about the thing that has lost energy.

So it makes the gravitational field weaker?

>>11962505
potential energy. The closer you get to the center the less potential energy you have. The more you escape the more potential energy.

Now think of this with black holes and you start to get very interesting.

>>11962605

Then answer, mongoloid.

>>11962611
nothing has lost energy you absolute mongoloid
read about conservation of energy and stop shitting up this thread

>>11962611
No, but certain object contain certain potential for work compared to other objects. Based on their position. That's the best way to put it. No energy is exchanged with gravitational fields. I could use a steam engine to propel a ball into the air, I converted heat into potential energy.

>>11962614
total energy is conserved. no energy is "lost" as you claim. I don't know how to answer a question that isn't formulated correctly, you're asserting that energy is being lost where it isn't being lost.

>>11962620
it's just less usable, ala entropy.

>>11962617

so is this spontaneous generation of energy? how can a body move faster using a force and this source of force doesn't lose energy?

answer it mongoloid

>>11962622
what the fuck does this even mean

>>11962624
Potential energy -> Kinetic energy
just because something goes faster doesn't mean it generated energy spontaneously. you're really uneducated and at the same time have some kind of complex where you think you know more than you do. it's really strange. stop being so vocal

>>11962625
https://en.wikipedia.org/wiki/Laws_of_thermodynamics
https://youtu.be/C0fGk1d4oIc
https://en.wikipedia.org/wiki/Rudolf_Clausius

I'm sorry bro you've got terminal reddit ngmi

>>11962578
Is the expansion constant or accelerating or is slower every other tuesday etc.

>>11962627

This force that we are talking about is the gravitational one. Energy comes from somewhere to push the object. The wonder is how can be this force apparently limitless.

>>11962611
Ah the next crisis to put in the queue
"We're using up all the gravity!"
(Obligatory your-mom joke here)

>>11962638
It comes from the space between protons and neutrons in iron atoms, kinda leaks out like olive oil, but you have to watch out for counterfeit gravity, that's how Weigh Watchers tricks people into thinking they're losing weight, a weaker bootleg gravity is included in the frozen meals

>>11962646
you're a frozen meal.

https://youtu.be/ykUmibZHEZk

>>11962505
everythign is connected
with ropes; elongated objects

>>11962663

Believe it your answer is better than most of the rest.

>>11962663
Probably some short ones, too, I reckon'.

>>11962671
what is light something you cant see a phenomena we call tehm in our world
theres no explanation of phenomena in modern day science, just descriptions. noone explains what causes light or how light works or wht it is.
light is a rope, torque explains light we see, and reelling in the links of the rope explains pull

>>11962505
I just realized it
Entropy is the decay of gravity. Entropy always rises because if it didn't gravity would be infinite and that can't be the case so entropic decay must exist to prevent it. Entropy is the ultimate antithesis to gravity.

>>11962532
Gravity is not a distortion of space, that's a mathematical description, an approximation. No one knows what gravity is.

If I throw and infinite amount of rocks towards a planet, will rocks stop being attracted to it at some point? If that's not the case, it means the gravitational "fuel" is actually infinite.

Gravity is not energy retard. What’s with retards and thinking gravity and magnetic fields have energy

>>11962539
Are you telling me you can just stand up for an indefinite amount of time and your legs won't have to put any energy into it?

>>11962809
retarded comparison because you have to expend energy to stand. if you're sitting you don't expend that much energy.

better comparison is a rock doesn't lose any energy by sitting on the floor of the earth.

>>11962611
Everything has gravitational potential energy, when they accelerate towards eachother, that energy is converted into kinetic energy, no energy is lost or gained.