@bevinp,
Bev let me try again, however haltingly: Looking at a burst of light as a "package" containing a fixed number of cycles of fixed wavelength, then you're asking, if this package (say, one light-second) always passes you at the same speed no matter how fast you try to go, then if it always contains the same number of pulsations why isn't it always the same color
The reason is, in effect when you change your speed you're looking at a different "package". Assuming it's a red light from a distant source; if you take off toward it, in effect your clock slows down so that its light appears more nearly blue. But you're now wondering how more cycles could suddenly find their way into the same span: it's because you and your yardstick have seemingly shrunk in the direction of motion; so your "package:" is much longer than mine--even though to you it's still 1 light-second in length
You'll note Bev my use of "in effect" and "seemingly". That's because the changes that take place in you and your rocket ship are relative to me, who remains behind, stationary with respect to the red light. ('Cause exactly the same circumstances as described above would apply if it were not you in motion but me and the light source. As they say, "It's all relative")
I am still wondering, Bev, whether Ros interprets your original q in the same way as I and if so whether he might yet better respond than I
Again however, this posting doesn't address the puzzling intuitive aspects of relativistic changes in the moving object, a subject still open to speculation. Presently merely attempting clarification of Bev's q and a possible response thereto
