Have you ever wished that you could speed up time, slow it down, or stop it entirely? Maybe
we all have, but unless you have Hermione Granger's Time Turner, the ability to control the clock's hands is probably not in your toolbox.
However, an invention called the "Slow Dance" frame opens a window into what it might look like to see things move in slow motion in the real world.
When you place them in the frame, delicate objects such as leaves and feathers quiver and undulate, as you might expect them to when they're stirred by a gentle breeze. But there's a subtle difference — the movements appear to happen at a fraction of their normal speed, taking place right in front of your eyes. [The Most Amazing Optical Illusions (and How They Work)] https://www.livescience.com/55996-magic-picture-frame-slows-time.html
