Several weeks ago I picked up “The Elegant Universe” because I thought it would have information on The Ultimate Theory. Soon afterwards, I picked up “How to Teach Physics To Your Dog” in order to get ...

Lab set-up Researchers have brought a thought experiment devised by Albert Einstein into the laboratory. (Courtesy: Yuchen Zhang) Quantum mechanics famously limits how much information about a system ...

Researchers announced last week that they had slowed down faint pulses of laser light and retrieved an image from that light after speeding it back up. In principle such "slow-light" technology might ...