Rotating systems lie at the intersection of special and general relativity, giving rise to a suite of counter-intuitive effects that challenge our understanding of space, time and motion. In ...

[Tim] was tired of compromising his portrait-oriented digital photos by shoehorning them into landscape-only frames. Unable to find a commercial solution, he built his own rotating digital photo frame ...

Popular Science posts a neat tutorial on how to build a rotating digital photo frame that cycles through pictures posted to your Flickr account. , whether they're of far-off places or my latest ...

Digital photo frames are great, but when you’re using one to display a slideshow, it tends to look terrible when it displays photos in the opposite orientation of how you have it set up. Over on ...

Hack A Day member Timothy Giles has created a very unique Raspberry Pi powered rotating picture frame, which incorporates both a Raspberry Pi and a little Arduino hardware to rotate the frame smoothly ...

What is a fake force? Let me illustrate with an example. Suppose you want to use Newtonian mechanics. You know - where the net force is the rate a which the momentum changes with time? Or maybe you ...