This book essentially delivered in terms of providing some further background to the film, which I found interesting. Some of the details conflict with what occurred in the film, but I am not going to be picky. I have two gripes. Firstly, the book is not particularly well written and the editing seems to be non-existent. Also, it did not answer what, for me, was a key technical question: Why was it more efficient to send AC over long distances compared with DC? Was it simply the fact that voltage changes with AC are easy and harder with DC?
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