Mechanical spinning globe that shows the night/day terminator
by Cory Doctorow from on (#2DJS0)
https://www.youtube.com/watch?v=xBD6OlKYz40&feature=youtu.be
Elenco's Night 'n Day Mechanical Globe uses a system of translucent, exposed gears to rotate an internally illuminated globe that displays the seasonally adjusted, real-time night/day terminator as it spins. (more")