How the Geneva Drive (the mechanical step that makes the second hand on a clock work by turning constant rotation into intermittent motion) works.
As an engineer, this makes me happy.
If only one loop of this gif were equal to one second…
watching this while listening to a clock ticking
is the best decision i have ever made
Man this is rather fascinating.
One of my close friends is a belly dancer
And god help you if she gets bored and decides to knock her hip against yours
Like we could just be walking
I SWEAR THEY HAVE THE MOST POWERFUL HIPS ON THE PLANET
Tumblr user shubbabang is blasting off again!
The hips, they don’t lie…