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A sees (the image of) rocket arrival at 12:16. In the image the B clock reads 12:08.
Quote from: phyti on 19/08/2016 19:47:16A sees (the image of) rocket arrival at 12:16. In the image the B clock reads 12:08.This bit is wrong but nobody is listening to me when I am showing why it is wrong. They expect me to accept this when it is wrong. It is enough to drive me insane and it is so simple why it is wrong but nobody seems to understand and keep replying with 12:16 when it is 12:08.
Lets us take this in really short steps, it may takes several days.
Quote from: Thebox on 19/08/2016 21:54:49Quote from: phyti on 19/08/2016 19:47:16A sees (the image of) rocket arrival at 12:16. In the image the B clock reads 12:08.This bit is wrong but nobody is listening to me when I am showing why it is wrong. They expect me to accept this when it is wrong. It is enough to drive me insane and it is so simple why it is wrong but nobody seems to understand and keep replying with 12:16 when it is 12:08.No, it is not wrong and any attempt to prove otherwise is a new theory - or more properly an 'it can't be true'Quote from: Thebox on 19/08/2016 21:54:49Lets us take this in really short steps, it may takes several days. Let's not. To do so would insult the intelligence of most primary school children.One last try on a subject we have been over many times.Let the rocket send out a flash of light every minute.It leaves at 1200 and sends its first flash at 1201 which takes another 1min to travel back to A arriving at 1202.Similarly the flash at 1202 arrives at A 12041203 at 12061204 at 12081205 at 12101206 at 12121207 at 1214Finally at 1208 the rocket arrives at B and emits final flash, this flash along with the light reflected from the rocket (its image) arrives at A at 1216.Whether you accept reality or not, this is the way it works. Live with it.
+vx=c=1s -vx=c=1s difference t=0
Quote from: TheBoxvx=c=1sThis bit of pseudo-mathematical mash is confused because the author has not tried to compare the units (in which case he would have seen that it is wrong, although perhaps not realized why).- You can't say "c=1s", because the units of c are meters per second (a velocity), while the units of 1 second are time. If the units don't match on each side of the "=", the numbers are nonsense.- "vx=c", is even more confusing because I could not see "v" defined anywhere. Assuming the normal convention that v is a velocity, the units of v are meters per second (like c), and the units of x are meters. The units on the left are seconds which don't match the meters per second on the right side of the "=" (although it does match the seconds on the last "="). If the units don't match, the numbers are nonsense.You calculate the propagation time t (in seconds) as velocity v (in meters per second) x distance (in meters). Because we are talking about light pulses in a vacuum, the velocity = c (in meters per second).t = v*x = c*x = 1 secondUnits: Time = (meters per second) * (meters) = (seconds)Quote from: TheBox +vx=c=1s -vx=c=1s difference t=0Reading between the lines, this seems to be saying that light takes 1 second to propagate in one direction and that light takes -1 second to propagate in the opposite direction, for a round-trip time of zero seconds. If you achieve this, you will win a Nobel Prize; unfortunately, it is a fallacy.The next bit of confusion seems to be around "+"/"-". This seems to be using velocity or distance as a vector; vectors can have a direction, which can be "+", "-" depending on how you are using it. Just like using units consistently is essential, it is essential to use the direction of a vector consistently, or the equation is a nonsense.If you have never studied vectors at university level, I suggest you just stick to scalars.It takes 1 second for the light to travel in one direction, and it takes another second for the light to travel in the other direction, for a round-trip time of 2 seconds. Definitely not 0 seconds!Note: I might have misread these equations; if so, please explain what was intended.
Can you remember the time we did -ve and +ve ?I thought v in this instant was vector and e was just any direction?
The Photon leaves the sun at 6am it arrives at 6.08amit is reflected at 6.08amit travels 1 second and is received by Captain Stewart's eyes at 6.08am and 1 light secondThe second Photon is exactly the same that enters your eyes from the reflection off the rocket. You see captain Stewart simultaneously.
-ve and +ve are abbreviations for the words negative and positive
This is not the same question/situation as the original one.
please tell me if this incorrect logic