This brief account of the life of the interesting Nikola Tesla, who apparently invented everything important in today's technology, was fascinating and nicely written.
I did think the notion of proof was tossed about with a little more abandon than I like to see in a work of non-fiction. To demonstrate a thing is not to prove it. But as the main thrust of the book was an historical account, this is not of such moment as it would be in a more technical work.
(review of free book)