11 posts tagged with Physics and quantum (View popular tags)

R.I.P. John Wheeler , theoretical physicist. Famous for the Wheeler-Feynman equations and the term "black hole," which he coined to describe a singular point mass, he has died at age 96. The NYT usually gives pretty good obituary but they outdid themselves this time.
posted on Apr 13, 2008 - View this thread

Quantum Mechanics: Myths and Facts (pdf), a recently-updated paper on the Cornell arXiv peer-review site. By Hrvoje Nikolić of the Rudjer Bošković Institute in Croatia.
posted on Feb 25, 2008 - View this thread

The Crossing is a new FPS game where single-player and multiplayer modes meld in one. At any point, any Non-Player-Character might not be an NPC at all, but another Player. It is likely that, as in a game of tag, players will just take turns to be "it" like Agents in the Matrix, but... wouldn't it be great if we could all be "it" at the same time? Quantum Gaming might just be the way to model such a swarm of gamers.
posted on Sep 23, 2007 - View this thread

Demonstrate one of the weirdest quantum effects in your home using a laser pointer, some tinfoil, a piece of wire, and a $7 polarizer. The device, called a quantum eraser, operates in a way very similar to the famously mind-blowing double slit experiment that was voted the most beautiful experiment in physics.
posted on Apr 30, 2007 - View this thread

Quantum Encryption Scientists have created an unbreakable cypher through the use of quantum physics, where a photon is observed and used as the basis for an encryption key. "Uncertainty is the principle we exploit. It's impossible to find the key, because the photon can be measured once and only once. An eavesdropper can't measure it, and so can't get the key." Props to Heisenberg!
posted on Nov 9, 2006 - View this thread

Teleportation Breakthrough. Until now scientists have teleported similar objects such as light or single atoms over short distances from one spot to another in a split second. But Professor Eugene Polzik and his team at the Niels Bohr Institute at Copenhagen University in Denmark have made a breakthrough by using both light and matter. A more technical explanation.
posted on Oct 5, 2006 - View this thread

Enzyme reactions use quantum tunneling. British scientists have apparently solved the question of how enzymes speed up atomic reactions -- through a quantum tunneling effect at the reaction site. Just when you thought biology couldn't get any cooler. [via]
posted on Aug 27, 2006 - View this thread

Boundless energy or bad math? Randell Mills thinks he has the solution to our energy problems. In his company's patented process, "energy is released as the electrons of atomic hydrogen are induced to undergo transitions to lower energy levels producing plasma, light, and novel hydrogen compounds." It also implies that quantum mechanics is wrong.
posted on Nov 5, 2005 - View this thread

A bold paper published in the August issue of Foundations of Physics Letters seems set to change the way we think about the nature of time and its relationship to motion and classical and quantum mechanics. The work also appears to provide solutions to Zeno's paradoxes. (Via Kurzweilai.net. More inside...)
posted on Aug 1, 2003 - View this thread

Schroedinger's Lunchbox Quantom physics on an empty stomach is probably a mistake.
posted on Jan 26, 2003 - View this thread