Impossible to Prove Time is Real Ok, I understand that but are such effects not localised? As an observer, I would just see a receding red blob, wouldn't I? An observer would not see or detect spatial curvature. I can understand the motion curving or warping the space being traversed but to me, that suggests that the fabric of space is flexible not curved. — universeness
You would see a torch moving away from you getting redder and redder in a flat space. The guy holding the torch would see a curved spacetime, with a varying metric.
This sounds like you agree with the posit that 'Space is not rigid, it's flexible.' Similar perhaps to a person swimming under water, you displace your volume of water. Move through space and you displace/flex your volume of space.
I understand your reference frame points and its repeated in Brian Greene's book 'The Elegant Universe' A person travelling at light speed may switch on a torch. The light from that torch would travel at light speed in all directions. In his own reference frame he would also age at the same rate he aged in the frame of reference he was in before he accelerated to light speed. — universeness
Well, actually
how space is curved is a difficult qùestion. GR, general relativity, doesn't answer that. It states it. Where there is acceleration, there is curvature (it is normally stated that where's mass/energy, there is curvature). But how this curves space(time)? Quantum gravity describes it as an exchange of gravitons, but this exchange takes place in flat space and there lies the problem that both string theory and Loop quantum gravity don't solve. Me on the other hand...
I understand that you never add a velocity to the speed of light, so the speed of light is a constant.
I also understand that traveling at a constant speed in dark space and in absence of any other sensory info, you would feel no different to being completely at rest. But you would feel accelaration. I think that is what you are describing by your words in the quotes above. — universeness
Indeed. In dark space you can feel it. It could be you accelerate in empty space or istand still n curved space.
This has some commonality with the Klein bottle guy but I could be recalling incorrectly.
I just have great difficulty trying to contemplate anything outside 3D. I can visualise the idea of other dimensions of the very small using the common 'Look at a 3D pipe from above and it looks 2D, you dont see the wrapped dimension. I can also easily visualise a doughnut shape but that's about it. I dont understand " the 4d torus, there can be 2 of these structures accelerate away from the hole of the torus form. The torus is not actually a torus, but only looks so at the mouth." I will have to research that one — universeness
The Klein bottle is a kind of Mōbius strip and bears indeed resemblance with a torus. I don't think there is an a Tòrus form exactly, but only the inside, stretching out to infinity. The 4d torus is unimaginable. But you can imagine a 2d one. Then the two universes emerging are circles starting at the center, one up and one down.
Nope. I'm lost now. Would need to research and study. How can you get massless matter/antimatter fields??? Surely all matter has mass or else it's not matter its energy? — universeness
The neutrino was thought massless once too. The Weyl equation is suited (in quantum field theory). If the two basic fields are massless then mass comes into existence if they interact strongly, by a new charge called hypercolor.
Gonna read the dimp! I'm typing on a phone, with one thumb and a fucking small screen. My laptop is still dead.
Nice talking with you!
Forgot one!
Do you mean Mathematically(pure numbers or pixel values) or by its attributes, such as (name,radius, coordinates of centre point, line thickness, fill colour/pattern etc). This is a system used in computing called object orientated graphics. — universeness
Attributes, the metric components, in the metric tensor. Theses are defined intrinsically but can be immersed in a higher dimension.