terça-feira, 23 de dezembro de 2014

The Physics of Christmas

Below is a scientific listing of some of the concepts of the holidays that many people, especially youths have accepted as true.  Lets take a look…

1. No known species of reindeer can fly (there are 300,000 organisms yet to be classified, most are insects and germs, this does not rule out flying reindeer)
2. There are about 2 billion children (persons under 18) in the world.
3. “Santa” doesn't (appear) to handle the Muslim, Hindu, Jewish and Buddhist children.
4. This reduces the workload to 15% of the total - 300 million kids.
5. On average, there are 3.5 children per household. Read more.

segunda-feira, 22 de dezembro de 2014

Researchers solve the mystery of how humans evolved colour vision

After two decades of work, an international team of researchers has discovered how humans evolved to see all the colours of the rainbow. By figuring out how our ancestors swapped ultraviolet (UV) vision for blue-light (or violet) vision, they have finally pieced together a timeline for one of our species' most defining features.
"We have now traced all of the evolutionary pathways, going back 90 million years, that led to human colour vision," lead author and biologist, Shozo Yokoyama from Emory University in the US, said in a press release. "We've clarified these molecular pathways at the chemical level, the genetic level and the functional level." Read more.

Schlechtes Timing

Tyrrhenian Sea and Solstice Sky

Image Credit & Copyright: Danilo Pivato

sexta-feira, 19 de dezembro de 2014

NASA’s Kepler Reborn, Makes First Exoplanet Find of New Mission

ASA's planet-hunting Kepler spacecraft makes a comeback with the discovery of the first exoplanet found using its new mission -- K2. The discovery was made when astronomers and engineers devised an ingenious way to repurpose Kepler for the K2 mission and continue its search of the cosmos for other worlds. Read more.

Schönes Weihnachten!

terça-feira, 16 de dezembro de 2014

Why is it Harder to Drive Backwards?

Supraleiter-Rekord unter Druck gebrochen

 An Schwefelwasserstoff beobachten Forscher Supraleitung bei bisher nicht erreichten Temperaturen. Die Messungen kommen überraschend und lassen auf eine neue Klasse widerstandsloser Materialien hoffen. Mehr lesen.


quinta-feira, 4 de dezembro de 2014

New material uses the cold darkness of the Universe to cool your house

Engineers from Stanford University in the US have created a material that keeps your house cool by beaming heat back into the “cold darkness of the Universe”.
The material reflects sunlight, just like a regular mirror, but most importantly, it also beams heat from inside a building straight into outer space. This means that it lowers the temperature of anything that’s it’s placed on by up to five degrees, even if it’s sitting in direct sunlight - and all without electricity. Read more.

Supersonic micro-bullets show graphene would make great body armour

Beautiful Photos Show the Bizarre Behavior of Liquids