From somebody who hasn't had physics 2 in 10 years this is a great refresher!
Minor correction after running the math:
"In contrast, a 1 GHz signal has a wavelength of 0.1 m (less than 1 foot). "
1GHz in vacuum is 0.3m = 30cm = less than 1 foot
The Other Tesla David Blaza5 comments I find myself going to Kickstarter and Indiegogo on a regular basis these days because they have become real innovation marketplaces. As far as I'm concerned, this is where a lot of cool ...