[Phys-l] Relativisitic mass vs Invariant mass

[<carmelo@pacific.net.sg>]

Hi Joel,

Are you referring to the author's efforts?

Does anyone know why Einstein wrote this Letter to Lincoln Barnett? (It is not good to introduce the concept of the
mass M = m/(1 − v2/c2)1/2 of a moving body
for which no clear definition can be given.)
Or what was Lincoln's question? Anyone has the complete Einstein's 1947 letter to Lincoln Barnett? 

> For your amusement and edification,
> here is a recent article on relativistic mass versus invariant mass in
> SR
>  
> http://arxiv.org/PS_cache/physics/pdf/0504/0504110.pdf
> <http://arxiv.org/PS_cache/physics/pdf/0504/0504110.pdf> 
>  
> Apologies if this is a repeat
>  
>
> ________________________ 
> Joel Rauber 
> Department of Physics - SDSU 

Best regards,
Alphonsus