Why Do the Planets Orbit in the Same Plane?

[ ♪ Intro ] When you see a map of the solar system, it looks like all of the planets are orbiting the sun in a flat, two-dimensional plane, but that’s not just to save paper. While there is a little wiggle room, the planets really are orbiting on mostly the same level. And we’ve…

JJRC H8 Mini Quadcopter Review & Flight

As of February 2016, the H8 Mini – confusingly sold under both the JJRC and Eachine brands, but equal in everything but the packaging – perhaps isn’t the hot stuff it once was. Released in May of 2015, the H8 Mini generated buzz for two reasons: 1) It had a super-fast yaw rate and 2)…

Anti-Gravity Wheel?

I am here at the University of Sydney where the mechanical engineering shop has built this incredible piece of apparatus for me. It is a forty pound, that is nineteen kilogram flywheel on the end of a meter long shaft. Can you imagine trying to hold this out horizontally with just one hand at this…