An electron would not know how large it ought to be unless there existed independent lengths in space for it to measure itself against.


The Mathematical Theory of Relativity - Chapter V (p. 155), At The University Press. 1930


An electron would not know how large it ought to be unless there existed independent lengths in space for it to measure itself against.

An electron would not know how large it ought to be unless there existed independent lengths in space for it to measure itself against.

An electron would not know how large it ought to be unless there existed independent lengths in space for it to measure itself against.

An electron would not know how large it ought to be unless there existed independent lengths in space for it to measure itself against.