this is small news but I was delighted to read Editor's response on E = mc2 in May TPT issue. They wrote in part:
"the full lesson...avoided propagating subversive or dated views about relativistic mass."
BTW, tangentially related news: there was an obituary in Physics Today (May 2016) on Lev Okun who wrote critically about relativistic mass (if you are interested, google using "lev +okun + concept +mass").
I also note that John D. has recommended a geometric approach to SR for many years. This approach does not have any use - among other things - for relativistic mass, as far as I can tell.
Regards,
Antti Savinainen, PhD
Finland
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