Abstract
SIR JOSEPH LARMOR states that the identity of mass and energy is now being questioned, and points out that it was originally deduced from the relativity principle. He considers that energy, whilst possibly equivalent to the abstract mass concept of the four-dimensional space-time, has little to do with the inertial mass as directly measured in the laboratory.
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Points from Foregoing Letters. Nature 137, 279 (1936). https://doi.org/10.1038/137279b0
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DOI: https://doi.org/10.1038/137279b0