In the 1930s classic movie “The Wizard of Oz,” The Wicked Witch of the West uses a sand-filled hourglass to gleefully remind our hero Dorothy that she only has so much time to live while the sand is ...

This project combines a sand timer with a rotating mechanism and an optical beam through the center of the timer to observe the falling sand as they create a USB Hourglass. This project combines a ...

If you want to waste time in a meaningful way, get yourself an hourglass. It’s simultaneously mesmerizing and terrifying to sit there and watch the seconds slip through the threshold that separates ...