Physicists discover what a multiverse might really be like

It's likely that you've seen video of ferrofluids doing things like growing spines when exposed to magnets, or being built up into sculptures by artists using magnetic fields. But what if they're not just artistic triumphs? What if ferrofluids can act as models and let scientists learn about the multiverse? » 2/12/13 8:40am 2/12/13 8:40am

Invisibility: Just One Facet of the Wide, Wild World of Optical…

Cat's eyes look creepy because, at certain sudden angles, they reflect light directly back at you, the viewer. The ever-popular question of invisibility is wrapped up in that ability to reflect light at certain directions, commonly known as the refractive index. This week, two physicists from the UK and the Czech… » 11/30/08 4:00pm 11/30/08 4:00pm