Vetenskap - Diskussion och filmklipp

wikipedia ämnar att samla fakta kring olika ämnen = wikipedia är en faktasida

sen visst, utfallet kanske inte blir så, nödvändigtvis, vilket var varför absol skrev att många av ämnena där inte bör vara där eftersom dom inte är "faktuella"

det är ju informativt om det står saker som man verifierat om de ämnena, men blir så komiskt när partiska supporters av t.ex. bush eller jehovas vittnen ska gå in och ändra tillbaka för att behålla sin subjektiva feelgoodimage x)

http://www.science20.com/cool-links/nubian_complex_southern_arabia_may_change_out_africa_theory-85150

Over 100 newly discovered sites in the Sultanate of Oman might confirm that modern humans left Africa through Arabia long before genetic evidence suggests - the sites are located far inland. in the Dhofar Mountains of southern Oman, away from the coasts.

Two optically stimulated luminescence age estimates from the open-air site of Aybut Al Auwal in Oman place the Arabian Nubian Complex at ~106,000 years ago, providing archaeological evidence for the presence of a distinct northeast African Middle Stone Age technocomplex in southern Arabia.


http://newswatch.nationalgeographic.com/2011/11/03/modern-humans-wandered-out-of-africa-via-arabia/

“By looking at similarities in patterns of DNA recombination that have been passed on and in disparate populations, Genographic scientists confirm that African populations are the most diverse on Earth, and that the diversity of lineages outside of Africa is a subset of that found on the continent.

“The divergence of a common genetic history between populations showed that Eurasian groups were more similar to populations from southern India, than they were to those in Africa. This supports a southern route of migration from Africa via the Bab-el-Mandeb Strait in Arabia before any movement heading north, and suggests a special role for south Asia in the ‘out of Africa’ expansion of modern humans.”

http://phys.org/news/2013-08-team-technique-hydrogen-fuel.html


A University of Colorado Boulder team has developed a radically new technique that uses the power of sunlight to efficiently split water into its components of hydrogen and oxygen, paving the way for the broad use of hydrogen as a clean, green fuel.

The CU-Boulder team has devised a solar-thermal system in which sunlight could be concentrated by a vast array of mirrors onto a single point atop a central tower up to several hundred feet tall. The tower would gather heat generated by the mirror system to roughly 2,500 degrees Fahrenheit (1,350 Celsius), then deliver it into a reactor containing chemical compounds known as metal oxides, said CU-Boulder Professor Alan Weimer, research group leader.

As a metal oxide compound heats up, it releases oxygen atoms, changing its material composition and causing the newly formed compound to seek out new oxygen atoms, said Weimer. The team showed that the addition of steam to the system—which could be produced by boiling water in the reactor with the concentrated sunlight beamed to the tower—would cause oxygen from the water molecules to adhere to the surface of the metal oxide, freeing up hydrogen molecules for collection as hydrogen gas.



Nästa på önskelistan: Efficient hydrogen storage :(

http://www.aftonbladet.se/nyheter/article17245184.ab

Idag åt man en "odlad" kötthamburgare.

jävlar, det är ju live!!! (right?) pass på!

förhoppningsvis så blir inte testarna förvandlade till någon sorts zombies

(fatta roligt det hade varit dock)

Citat från u_suck_tbh

FAN VILKEN CHEESIG DEMONSTRATIONSVIDEO

no zombies :'(




yet

http://www.sci-news.com/biology/science-hemiscyllium-halmahera-new-species-walking-shark-indonesia-01335.html


‘Walking’ sharks, also known as bamboo sharks or longtail carpet sharks, belong to the family Hemiscylliidae in the shark order Orectolobiformes.

Rather than swim, these slender-bodied sharks ‘walk’ by wriggling their bodies and pushing with their pectoral and pelvic fins.

They are relatively small, with the largest species measuring about 48 inches (1.22 m). The newly discovered species, called Hemiscyllium halmahera, reaches 28 inches (70 cm) in length.

Dr Allen’s team caught two specimens of Hemiscyllium halmahera near the island Ternate, the Maluku Islands, Indonesia.


Finns video i länken. Dom GÅR verkligen på bottnen, krälar lite som en orm, och rör sig benlikt med sina fenor.

Existence of new element confirmed

http://www.lunduniversity.lu.se/o.o.i.s?news_item=6082&id=24890

Känns som att man "upptäcker" nya element hela tiden.

Citat från Orks