His idea was that, theoretically, the closer we come to traveling at the speed of light ... slowing of time due to motion time dilation. Imagine you're standing on Earth holding a clock.

That’s just what [Mosivers], a physicist and electronics enthusiast, has done with the Polarizer Clock. It’s not a perfect build, but the concept is intriguing: using polarized light and ...

Now, a new study by Anjun Chu and colleagues has examined how mass-energy equivalence (E=mc²) manifests via gravitational ...