relativity and railroads

[andrew at cee.hw.ac.uk]

JULIUS RAPER writes:
> 	This is a question for all the polymaths out there on the  P-list:
> Is there a place where Einstein uses two trains traveling on parallel
> tracks as a metaphor explaining relativity--as T. Wolfe later does in OF
> TIME AND THE RIVER?  I have a vague memory that either he or Proust
> preceded Wolfe in the analogy.
> 	I need the info for a short essay on Barth.  Your help will be
> appreciated.             Thanks, JRR

Einstein wrote a book on Special Relativity which conducts a thought
experiment employing a single train, a stationary observer (stationary
relative to the tracks, that is) and a flashlight. You may be
recalling this book.


Andrew Dinn
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We drank the blood of our enemies.
The blood of our friends, we cherished.