sábado, 29 de março de 2014

BBC Future: Space Race

http://www.bbc.co.uk/bbc.com/future/bespoke/20140304-how-big-is-space-interactive/index.html

segunda-feira, 17 de março de 2014

Warped Sky: Star Trails over Arches National Park

http://apod.nasa.gov/apod/ap140317.html

Detectadas as primeiras ondulações no espaço-tempo produzidas pelo Big Bang




A primeira detecção directa de “ondas gravitacionais primordiais” mostra que, quando o Universo tinha apenas um décimo de bilionésimo de bilionésimo de bilionésimo de segundo de vida, sofreu uma brutal expansão.
Esta segunda-feira, uma equipa internacional de cientistas anunciou nos EUA ter finalmente conseguido “ver” directamente, pela primeira vez, ondas gravitacionais que, quase para além da dúvida, são “ecos” da inflação inicial do Universo.
Para detectar as ondas gravitacionais primordiais, John Kovac, do Centro de Astrofísica Harvard-Smithsonian (CfA), e colegas utilizaram um telescópio chamado BICEP e instalado no Pólo Sul. O BICEP foi concebido para observar os vestígios da luz emitida pelo Big Bang, que hoje está presente sob forma de microondas em todo o cosmo – a chamada radiação cósmica de fundo (RCF) – e que víamos como “chuva” no ecrã dos antigos televisores. Ler mais.

sábado, 15 de março de 2014

Names

 

 How can names be total absurd: "A Mexican Couple Named Their Baby Facebook, And The Government Wasn’t Happy About It".

quarta-feira, 5 de março de 2014

The Chain Fountain, Explained

Usually, physics research starts with a known problem. There are surprises, of course, but they don’t often come from Internet videos, as happened with the case of the mysterious chain fountain.
It started with Steve Mould, a host of science television shows in Britain. Mr. Mould, who has a master’s degree in physics from Oxford, seems to be the discoverer of the chain fountain, which he demonstrated in a startling video posted online. In it, he pulls one end of a long chain of metal beads out of a glass container. Once he starts it off, the bead chain continues spilling out of the container on its own, like water or gasoline being siphoned from a tank. Read more.


terça-feira, 4 de março de 2014

The Chemistry of Breaking Bad

Walter H. White is the protagonist of the multi-award-winning American TV series Breaking Bad, which runs for a total of five seasons and is especially popular among young audiences.
At the beginning of the series, he is diagnosed with lung cancer and, in face of his seemingly unavoidable and imminent death, he searches for a way to establish financial security for his heavily pregnant wife, Skyler, and his handicapped son, Walter Jr.

Crystal Meth – The “Chemical Star of the Show”

N-methylamphetamine ((S)-N-methyl-1-phenyl-propane-2-amine), also known as meth, crystal, or pervitin, is the drug at the center of Breaking Bad.Read more.
thumbnail image: The Chemistry of Breaking Bad