That’s pretty good, though you could probably settle for the Newtonian version of gravity, relativity tends to complicate things. It is interesting to dig deeper, however:
Since it’s not a dissipative force like friction there’s no need to keep “pushing power into the system” like with a car’s motor or an airplane’s jet.
Why is friction dissipative? After all, no fundamental forces are.
I wouldn’t be able to answer using Newtonian gravity, I’ve never seen the theory explained (that I remember). I see more reading in my near future.
I obviously don’t understand the words “dissipative force” in the same way you do. I thought I had that part down too. I thought it means that the energy you are concerned about is getting changed into energy not useful to you, like “waste” heat. So then friction would be dissipative. Please point me in a direction to learn more.
Well, a more poetic description of Newtonian gravity (which may or may not also be reusable for relativity with some edits) goes that:
“The entire Universe longs to be in equilibrium, in balance. This equilibrium was disrupted some 13.75 billion years ago, and since then all the splinters have been trying to reunite into a single whole, the distance between them and various other forces hampering their quest to become one again. It is the natural equilibrium that all masses attract eachother in the same way that opposite electromagnetic charges must attract eachother. ”
it means that the energy you are concerned about is getting changed into energy not useful to you, like “waste” heat
What is waste heat and why is it less useful than any other form of energy? What’s the mechanism that changes useful energy into waste heat? These are some of the many of the questions you can still ask and find answers to, before you hit the limits of what is currently known.
Waste heat is an increase in entropy that doesn’t do something that we want it to. It differs from useful energy in that it has effects either irrelevant to or opposed to what we want.
Friction sometimes generates waste heat (as in the case where we want something to move) and sometimes generates useful work (as in the case where we want two things to stop moving relative to each other, and cause them to interact via friction to a common momentum.
The mechanism is electrical forces- given two crystal or ceramic matrices close to each other and moving, electrical forces near the interface cause electrons near the interface to enter different energy levels (heat). The electrons transfer the impulse to other particles in the same ceramic or crystal through other forces, slowing the relative movement of the macro objects.
Asking where gravity gets its power source is like asking where the electron gets its power source. After all, electrons exhibit a force on each of them, and so do baryons.
I think I do. I think I have a general, summarized, understangin of how gravity works. I would say I have a starting point of knowledge, and If I ever need to get more specific to solve specific problems, I know where to go research the details, and then run experiements to solve a specific problem. Or to challege the Fake Explanations.
I’m not set on Relativity, for example, and I don’t accept it as some kind of gospel. I love thories that try to poke holes in Reltivity. The day I posted this I read about several that tried and were demonstratably worse at predicting reality that Relitivity.
As far as I can tell my mental map of the universe works pretty well, but I’m ok to revise it if that turns out not to be true.
I’m putting this out there to clarify my understanding and get comments on it, so I accept your comment, but how would YOU phrase your answer to the question of how gravity works, in a better, non-Fake-Explanation way?
Or, alternatively, how would you rewrite my answer in a better, non-Fake-Explanation way?
Because if you mean that I need to send up my own Gravity Probe B to verify frame-dragging before I can help other students try to understand gravity, you’re out of luck. I’m planning on trusting teir results. (although I have to admit to being a bit disappointed when they confirmed Einstein instead of challenging him! )
As far as I can tell my mental map of the universe works pretty well,
Do you regularly encounter situations where your map of GR is tested?
I’m putting this out there to clarify my understanding and get comments on it, so I accept your comment, but how would YOU phrase your answer to the question of how gravity works, in a better, non-Fake-Explanation way?
Or, alternatively, how would you rewrite my answer in a better, non-Fake-Explanation way?
Sure:
Question: “Where the frak does gravity get its power source?”
Newtonian Answer: “It’s not really a source like a battery or a motor. What you’re seeing is the changing of energy from one kind to another. The fact that masses [creates a gravitational field] creates a way for the positions of potential energy to be changed into the motions of kinetic energy. …
GR Answer: “This question is related to a major unsolved problem in general relativity.
That’s pretty good, though you could probably settle for the Newtonian version of gravity, relativity tends to complicate things. It is interesting to dig deeper, however:
Why is friction dissipative? After all, no fundamental forces are.
Thanks!
I wouldn’t be able to answer using Newtonian gravity, I’ve never seen the theory explained (that I remember). I see more reading in my near future.
I obviously don’t understand the words “dissipative force” in the same way you do. I thought I had that part down too. I thought it means that the energy you are concerned about is getting changed into energy not useful to you, like “waste” heat. So then friction would be dissipative. Please point me in a direction to learn more.
Well, a more poetic description of Newtonian gravity (which may or may not also be reusable for relativity with some edits) goes that:
“The entire Universe longs to be in equilibrium, in balance. This equilibrium was disrupted some 13.75 billion years ago, and since then all the splinters have been trying to reunite into a single whole, the distance between them and various other forces hampering their quest to become one again. It is the natural equilibrium that all masses attract eachother in the same way that opposite electromagnetic charges must attract eachother. ”
What is waste heat and why is it less useful than any other form of energy? What’s the mechanism that changes useful energy into waste heat? These are some of the many of the questions you can still ask and find answers to, before you hit the limits of what is currently known.
Waste heat is an increase in entropy that doesn’t do something that we want it to. It differs from useful energy in that it has effects either irrelevant to or opposed to what we want.
Friction sometimes generates waste heat (as in the case where we want something to move) and sometimes generates useful work (as in the case where we want two things to stop moving relative to each other, and cause them to interact via friction to a common momentum.
The mechanism is electrical forces- given two crystal or ceramic matrices close to each other and moving, electrical forces near the interface cause electrons near the interface to enter different energy levels (heat). The electrons transfer the impulse to other particles in the same ceramic or crystal through other forces, slowing the relative movement of the macro objects.
Asking where gravity gets its power source is like asking where the electron gets its power source. After all, electrons exhibit a force on each of them, and so do baryons.
Then what makes you think you know enough to use GR for anything besides a fake explanation?
Maybe I don’t.
I think I do. I think I have a general, summarized, understangin of how gravity works. I would say I have a starting point of knowledge, and If I ever need to get more specific to solve specific problems, I know where to go research the details, and then run experiements to solve a specific problem. Or to challege the Fake Explanations.
I’m not set on Relativity, for example, and I don’t accept it as some kind of gospel. I love thories that try to poke holes in Reltivity. The day I posted this I read about several that tried and were demonstratably worse at predicting reality that Relitivity.
As far as I can tell my mental map of the universe works pretty well, but I’m ok to revise it if that turns out not to be true.
I’m putting this out there to clarify my understanding and get comments on it, so I accept your comment, but how would YOU phrase your answer to the question of how gravity works, in a better, non-Fake-Explanation way?
Or, alternatively, how would you rewrite my answer in a better, non-Fake-Explanation way?
Because if you mean that I need to send up my own Gravity Probe B to verify frame-dragging before I can help other students try to understand gravity, you’re out of luck. I’m planning on trusting teir results. (although I have to admit to being a bit disappointed when they confirmed Einstein instead of challenging him! )
Do you regularly encounter situations where your map of GR is tested?
Sure:
Question: “Where the frak does gravity get its power source?”
Newtonian Answer: “It’s not really a source like a battery or a motor. What you’re seeing is the changing of energy from one kind to another. The fact that masses [creates a gravitational field] creates a way for the positions of potential energy to be changed into the motions of kinetic energy. …
GR Answer: “This question is related to a major unsolved problem in general relativity.