Differential Gears Simplified

http://www.flixxy.com/how-your-cars-differential-gear-works-best-tutorial.htm

Electromagnetic Radiation Chart, circa 1944

Recently re-discovered at Lawrence Livermore Labs. How cool is this:

http://www.popsci.com/science/article/2013-08/let-chart-1944-teach-you-about-electromagnetic-radiation

More Titanium Printing

Check this out. Elon does it again.

http://youtu.be/xNqs_S-zEBY