If you've ever wanted to take those mid-action shots that you just can't get by hand, photography and DIY enthusiast BiOzZ has created a pressure-sensitive contraption that snaps pictures at just the right second.
The key to the rig is an acrylic plate made sensitive to pressure with a spring. When an object is placed on the plate, it sinks down just enough to complete an electrical circuit. When the object is knocked off the plate, the circuit breaks and another connected circuit sets of a camera flash.
The plate doesn't actually take the photo, it just sets off the flash — to take the picture, you can set up a separate camera with a three-second exposure and turn off the lights. That way, the flash captures the split-second moment. It's a very clever way to take those split-second images that you couldn't otherwise get with a normal camera (of course, there are other ways to do it, too). Hit the link for more details.