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And now here's a similar set of diagrams which attempts to do the same thing with another space dimension included, so it's an expanding circle shown at higher levels in the cone each time. The top left diagram shows four photons moving outwards from the centre, but it's a confusing mess, made worse this time by the lack of numbers to help you work out which photons are the same photon at different times as they move apart. The diagram under it shows the same thing, but looking in at an angle such that the photons moving up and down the screen appear to be moving more slowly, but you should be able to imagine that they are on a surface like a table set out in front of you and that all four photons are still moving apart at the same speed as each other. The diagram on the right shows the same action again, but this time it uses height up the screen to indicate time, but with a complication in that after the photons have moved away from the start, the nearest photon to you is then shown lower on the screen than the one furthest from you for the same moment in time - this is the result of the limitations of trying to show three dimensions (two of space and one of time) on a 2D screen. I won't even attempt to show all three space dimensions plus one time dimension on a 2D screen - you are expected to use your imagination to make that leap for yourself, but the idea of using cones to describe expanding spheres is fully valid.
Scratches head trying to relate any relativity to your diagrams.
Quote from: Thebox on 12/09/2016 19:48:40Scratches head trying to relate any relativity to your diagrams.Perhaps you need to find an expert where you live to discuss this kind of stuff with so that they can do it more effectively than is possible through texts and static diagrams. It will likely take a lot of demonstrations in the air with lots of hand waving to get the ideas through.
Think of a triangle with all 3 sides the same length. Two of the sides will form a right angle of 90 degrees (pi/2 radians). Sine, cosine and tangent can be described by the 'word' sohcahtoa. This stands for sine is opposite side divided by adjacent side, cosine is adjacent side divided by the hypotenuse and tangent is the opposite side divided by the adjacent side. Let me know when you have worked out why this is true. And no nonsense.