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I am not happy about how relativity doesn't treat gravity as a force.
Quote from: Jeffrey I am not happy about how relativity doesn't treat gravity as a force. No need to be too unhappy, Jeffrey. As I understand it, neither Einstein nor relativity asserts that gravity is not a force. The equations by which it is described, mathematically, are non-linear, but this non-linearity does not mean that the gravity it describes is not a force. Of course, as a non-mathematician, I may have missed something vital, in which case I would be grateful for an explanation.
Perhaps the reason why relativity doesn't consider gravity as a force yet a curvature of space-time is because of focussing on the reference of light and relativity there, as that's the DNA of relativity theory,
is light per-se as electromagnetic radiation a gravitational field influence?
The reason why relativity considers gravity as a curvature of space-time is owing to the time-dilation effect for each metric of space as a body gets more massive as it approaches the speed of light.
Quote from: Jeffrey I am not happy about how relativity doesn't treat gravity as a force. No need to be too unhappy, Jeffrey. As I understand it, neither Einstein nor relativity asserts that gravity is not a force. The equations by which it is described, mathematically, are non-linear, but this non-linearity does not mean that the gravity it describes is not a force.
A good answer? Newton is bust if we're using the Plank scale.
Quote from: opportunity on 26/02/2018 09:21:50A good answer? Newton is bust if we're using the Plank scale.I'm afraid a lot of your 'answers' just don't make sense in the way you present them.There is nothing about Planck that causes Newton's laws to 'bust'.I hope you are giving full explanations in New Theories, but can we stick with real physics here please.
Quote from: Colin2B on 26/02/2018 10:27:52Quote from: opportunity on 26/02/2018 09:21:50A good answer? Newton is bust if we're using the Plank scale.I'm afraid a lot of your 'answers' just don't make sense in the way you present them.There is nothing about Planck that causes Newton's laws to 'bust'.I hope you are giving full explanations in New Theories, but can we stick with real physics here please.If I was Newton, what would you tell me?
I hope I'm not the only one worried about Newtonian Physics being forgotten on the Planck scale...
Quote from: opportunity on 26/02/2018 11:20:17Quote from: Colin2B on 26/02/2018 10:27:52Quote from: opportunity on 26/02/2018 09:21:50A good answer? Newton is bust if we're using the Plank scale.I'm afraid a lot of your 'answers' just don't make sense in the way you present them.There is nothing about Planck that causes Newton's laws to 'bust'.I hope you are giving full explanations in New Theories, but can we stick with real physics here please.If I was Newton, what would you tell me?I'd tell you not to worry.The Plack units/scale gives us:- a conversion factor between frequency/wavelength and energy for the photon- an indication of the smallest unit we might be able to measure ie a limit on frequency and wavelength- a normalisation of units to simplify calculations- ħ sets the scale at which uncertainty of position and momentum become important.I don't see how any of those means 'Newton is bust if we're using the Plank scale'Relativity didn't overturn Newton, just added a level of detail/understanding for certain situations such as light in a gravitational field and the motion of Mercury. Newton's laws still work at slow speeds and gravity that is not extreme.Similarly quantum gravity will bring a deeper level of understanding (hopefully).Note: General relativity uses c and G but treats ħ as negligibly small, whereas quantum field theory uses c and ħ but treats G as negligible, both of these are reasonable considering the scale each works on. Currently there is uncertainty about what happens below the planck length (assuming we can ever observe any effect there), we will certainly need a description that may be outside of current relativity and QM, but statements like 'Newton is bust if we're using the Plank scale' risks spreading more false news.