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Re: [Phys-l] Absolute four-momentum of massless particles

We don't know the laws of physics. Special relativity is based on at least the assumption that Maxwell's equations are laws of physics. Thus, you need something more than the first postulate.

On Oct 1, 2010, at 9:16 AM, "Spagna Jr., George" <> wrote:

Bob Sciamanda writes

Yes, but that approach simply substitutes the validity of Maxwell's
Equations as the second postulate!"

I suggest that they are included under "all laws of physics" in the first postulate!

(I love these conversations! We can get deeper insights into both the physics itself and physics pedagogy by learning from the group's collective wisdom.)

"Who cares about half a second after the big bang;
what about the half a second before?"
- Fay Weldon

Dr. George Spagna
Physics Department
Randolph-Macon College
P.O. Box 5005
Ashland, VA 23005-5505

phone: (804) 752-7344
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