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View Diary: Who can own the future? (262 comments)

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  •  From wikipedia (0+ / 0-)

     

    It is not good to introduce the concept of the mass M = m/sqrt{1 - v^2/c^2} 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 M it is better to mention the expression for the momentum and energy of a body in motion.

        — Albert Einstein in letter to Lincoln Barnett, 19 June 1948 (quote from L. B. Okun (1989), p. 42[1])

    Even Einstein could change his mind, and in this case he did.  You are also arguing from authority.  In the end no one person decides what works best in science.  In the physics community the idea of relativistic mass is considered as less objective than that of invariant mass.

    "Trust only those who doubt" Lu Xun

    by LookingUp on Mon Jul 15, 2013 at 06:40:27 AM PDT

    [ Parent ]

    •  thanks for the interesting comment. (0+ / 0-)

      I'll give the matter further thought.  

      You are also arguing from authority.
      As were you in saying "you wouldn't get a job at CERN".  The fact is that we all quote authorities every day -- we would get nowhere if we had to prove everything ab initio every time.
      In the end no one person decides what works best in science.
      This I can fully agree with.
      In the physics community the idea of relativistic mass is considered as less objective than that of invariant mass.
      That could well be; I have noticed that many physicists subscribe to the delusion that constructs such as mass, energy, quanta, orbitals etc. have an objective reality independent of the theory they are embedded in.  This was the case with time too, at one point.

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