This question already has an answer here:
- Is spacetime discrete or continuous? 7 answers
I've just been wondering, what is the time that passes between one moment to another.
Lets take an example that we have a single light source, so small that it emits only a single, constant beam of light in only one direction. This beam hits a plane at a 90° angle. We are observing the dot that forms on this plane (like a laser dot). Now the light source starts moving in a single line with a set speed. Lets say to the left.
We are now observing the dot which moves. Since the light from the light source is pointing in only one direction and it is created at the light source at every moment, when does the light change from position 0, to position 0 + 1Left?
As far as I see it even if this goes down to infinite there must still be a moment there somewhere where the dot was at 0 and then suddenly at 0 + 1Left.
Does this make any sense?