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I have read quite a few biographies on Tesla. Unless every single one of them are wrong (they all had citations), the inaccuracies of that Forbes article are not even funny. Do they always post articles that haven't been fact-checked?

Edit: Just saw The Oatmeal's response. Good for him, but I doubt many of the people that read the Forbes article are also going to read the rebuttal.

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It's weird that the forbes article(and that the guy from the oatmeal agrees) thinks that radar would be useless for tracking u-boats in the 1st world war. They couldn't stay underwater for very long at all(because they had to operate on batteries as there was no way to vent diesel exhaust), radar should have been able to see the uboat before it went underwater to attack, and then saw that it had disapeared.

FYI, tracking items on water with a land (or sea) based radar is very difficult due to atmospheric effects (mainly ducting) and can cause unacceptable levels of false detections. Combine this with the lack of computer processing at the time means that you have a human operator trying to determine from a scope which targets to attack. I think that this makes detecting and tracking u-boats with early radar very unlikely. If you ever make it to Pearl Harbor on Oahu you can see some examples of the radar scope technology from the Pearl Harbor attacks, it was not very easy to use.

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