The history of magnetic recording was a repeat of a lot of stuff I not only learned in this class, but also in my Visual Literacy and physics class a few years back. However I was not aware of Valdemar Poulsen's contribution in that he created the first actual magnetic sound recorder and that Oberlin's theory was never tested.
I'm always kind of suprised in how much the military also furthers technology, and this presented another instance of just that when WWII "further perfected [magnetic recording]... technology."
This article may not have taught me too much new history, but the technology involved in competing video tape technologies was new to me. The head mechanisms and different rotation speed conflicts were ones I was previously unaware of.
Source:
http://www.h2g2.com/approved_entry/A3224936
Img Source:
http://www.ferrographworld.com/recordings.htm
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