What was wrong with Dingle?

Summarizing my explanation of the answer to this Pop Quiz question –

1) Good math and good logic are necessary for a good physical theory.
2) But they are not sufficient for a good physical theory.

Some other ways to say this is –

*) Math CAN be about the real world. But it is not CONSTRAINED to be about the real world like physics is constrained to be about the real word.

or

*) Even if a theory succeeds in the math sense, it can fail in the physics sense.

BTW, SR now views mass as an invariant quantity. In the 1980s experiments were done showing that mass does not vary with speed. Now days SR teaches that it is momentum, rather than mass, that varies with speed.

(Stop laughing - I’m serious.)

LB, Do you have a link to the experiment that shows mass does not increase with speed according to SR or GR or whatever R? And is it not true that momentum increases with speed? Just want to be sure about this stuff as it gets deep.

Let a 12" rocket ship travel away from point A at a velocity of half the speed of light, and let a flash of light travel within the rocket ship from stern to bow. When the flash of light arrives at the bow within the rocket ship frame,(using "proper length" within rocket ship frame)the stern will be 6" away from point A as observed within the rocket ship frame, and the bow will be 18" away from point A as observed within the rocket ship frame. However, when the flash of light arrives at the bow as observed from the fixed frame of point A, (using "proper length" within fixed frame)the stern will be 6" away from point A as observed from the fixed frame, and the bow will be 12"/g=12"/1.16=10.34" away from point A as observed from the fixed frame. Then, the stern's position is a simultaneous event between rocket ship frame and fixed frame, and the bow's position is a non-simultaneous event between rocket ship frame and fixed frame.
Therefore, given the simultaneous event of the stern's position between frames, time dilation is the only effect of spacetime physics to occur within the rocket ship frame; and, given the non-simultaneous event of the bow's position between frames, space contraction is the only effect of spacetime physics to occur within the fixed frame.

Now, Time dilation occurs to offset the different rates of light travel time observed between reference frames because the speed of light is a constant within special relativity. But, time dilation is a function of time as a 4th dimension. How, then, does Lorentzian Relativity states clocks slow down without introducing the 4th dimension and necessitating time dilation?

<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by ebg</i>
<br />Let a 12" rocket ship travel away from point A at a velocity of half the speed of light, and let a flash of light travel within the rocket ship from stern to bow. When the flash of light arrives at the bow within the rocket ship frame,(using "proper length" within rocket ship frame)the stern will be 6" away from point A as observed within the rocket ship frame, and the bow will be 18" away from point A as observed within the rocket ship frame. However, when the flash of light arrives at the bow as observed from the fixed frame of point A, (using "proper length" within fixed frame)the stern will be 6" away from point A as observed from the fixed frame, and the bow will be 12"/g=12"/1.16=10.34" away from point A as observed from the fixed frame. Then, the stern's position is a simultaneous event between rocket ship frame and fixed frame, and the bow's position is a non-simultaneous event between rocket ship frame and fixed frame.
Therefore, given the simultaneous event of the stern's position between frames, time dilation is the only effect of spacetime physics to occur within the rocket ship frame; and, given the non-simultaneous event of the bow's position between frames, space contraction is the only effect of spacetime physics to occur within the fixed frame.<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote"> ebg, you have a 12" ship traveling at 491,040,000 fps passing an observer at fixed point 'A' transmitting a flash of light traveling at 982,080,000 fps and you expect said fixed observer to verify your conclusions yet you do not say when the "flash" occurs; when the bow passes point 'A', when the mid point of the ship passes point 'A' or when the stern passes point 'A'. Knowing when the "flash" occurs could be very helpful considering the fixed observer does not have much time to do his/her ciphering. Also, you did not factor in the effect mass increase would have on the contraction factor, there would have to be some degree of offset. As to your question about LR relativity, time dilation and the effect it has on clocks; Sorry, I honestly do not know, but I will look into it. Thank you.
thebobgy