- #1
pmb_phy
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In a letter Einstein wrote to Lincoln Barnett in he wrote in (1948) he wrote
Question: Why do you think Einstein said no clear definition can be given?
Thanks
Pete
It is not good to introduce the concept of the mass
[tex]m = \frac{M}{\sqrt{1-v^2/c^2}}[/tex]
of a moving body for which no clear definition can be given. It is better to introduce no other mass concept than the rest mass, m. Instead of introducing m0 it is better to mention the expression for the
momentum and energy of a body in motion.
Question: Why do you think Einstein said no clear definition can be given?
Thanks
Pete