The Ladder Paradox is a famous thought experiment that shows you why you can fit objects into spaces that are too small for them. And also why you can’t, depending on your perspective. Relativity does ...

(via PBS Space Time) Today we’re going to delve into a couple of the most famous paradoxes of special relativity: the Twin Paradox, The Ladder Paradox (aka the Barn-Pole Paradox), and a paradox ...

Too often relativity is confined to space ships and interplanetary travel. It’s time to dive and see what weird ideas relativity can bring to us from beneath the sea. Jim Supplee first thought up a ...

Fermilab physicist Don Lincoln explains a well-known thought experiment examining the consequences of special relativity. “Time waits for no man” goes the saying, and it appears to be true. Inexorably ...

One of the fundamental challenges of physics is the reconciliation of Einstein's theory of relativity and quantum mechanics. The necessity to critically question these two pillars of modern physics ...

IT WAS while serving in the German army on the Russian front that, in the winter of 1915-1916, the physicist Karl Schwarzschild sent Albert Einstein some papers. He had solved Einstein’s equations of ...

General relativity, the joint theory of gravity, space and time gives predictions that become clearly evident on a cosmic scale of stars and galaxies. Quantum effects are fragile and observed on small ...

AS MAXIMS GO, Time is relative may not be quite as famous as Time is money. But the notion that time speeds up or slows down depending on how fast one object is traveling relative to another surely ...