"Spaceman" wrote in message
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"Greg Neill" wrote in message
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| "Spaceman" wrote in message
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| "Greg Neill" wrote in message
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| | "Spaceman" wrote in message
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| | "Greg Neill" wrote in message
| | . ..
| | | For material particles, yes, if you're referring to
| | | the observed deBroglie wavelength. For light,
| | | the observation velocity is fixed and the momentum
| | | change shows up as a frequency change.
| |
| | What was changed about the momentum Greg?
| |
| | That's like asking what was changed about the
| | size of something. The measured energy is
| | changed. Remember? You said yourself, photons
| | are packets of energy.
|
| The energy can not change without a speed difference
| Greg.
|
| Sure it can, if the frequency has changed. E = h*f.

Greg,
the frequency can't change without a speed change.

Why?

you have to change the speed to get the energy and the frequency
to change at all.

Why?

And more to the point, the speed is empirically measured
not to change. So deal with it.



| How did the energy change without a speed difference Greg?
|
| By a change of frequency. E = h*f.

Greg,
the frequency can't change without a speed change.

Your repetition of that statement does not make it
any more true. It is as false now as the first time
you uttered it. James, the speed is empirically
measured to be the same. Deal with it.

you have to change the speed to get the energy and the frequency
to change at all.

Nope. Show how the speed can change as well as the
frequency in the observed way and still conserve
energy.