Blog Posts

sexta-feira, 22 de abril de 2011


Começamos com 4 Robots feitos de lego Technik, que separam 48 blocos por minuto, uma maravilha...

Outro Vídeo, com imagens do Sol...

Best Sun Images From Solar Space Telescope’s First Year

By Lisa Grossman 

NASA's Solar Dynamics Observatory, a space telescope charged with watching the sun in unprecedented detail, revealed its first look at the sun to the world one year ago today.
Since then, the telescope has watched the sun shift from its quietest period in years to the beginning of a new, active solar cycle. It's seen loops of plasma that dwarf the Earth tracing the sun's magnetic field, early stages of massive explosions that send hot charged material ripping through space, and sunspots dancing across the solar surface

...E mais progressos nos Grafenos, com um, 10 vezes mais forte que o aço!

New Graphene Material is Paper-Thin and Ten Times Stronger Than Steel
By Clay Dillow

Researchers at the University of Technology Sydney have created a new material that is lighter, less dense, harder, and stronger than steel. But this material isn’t one of those breakthroughs that only sounds good on paper. It is paper, and it could be a game-changer for materials science if it can live up to researchers’ hopes.

This graphene paper is constructed of graphite reformed by chemical processes into monolayer hexagonal carbon lattices stacked as thin as a sheet of paper, and it is remarkably strong. To quote a press release from UTS:

Compared to steel, the prepared GP is six times lighter, five to six times lower density, two times harder with 10 times higher tensile strength and 13 times higher bending rigidity.

That’s no incremental improvement on the qualities of steel, but a huge leap forward in terms of overall material strength (plus, like paper, it is flexible). And because it is graphene, it is also imbued with some interesting electrical, thermal, and mechanical properties.

...Eis algo para quem ganhar o Euro-Milhões:

The EUR65,000 Cavalon side-by-side, fully-enclosed gyrocopter

By Mike Hanlon

The newest addition to the gyrocopter genre arrived at Aero Friedrichshafen this week in the form of a side-by-side, fully-enclosed, composite construction Cavalon gyrocopter. The gyrocopter is to the helicopter what the microlight is to traditional small aircraft. Invented in 1923 by Spaniard Juan de la Cierva, the gyrocopter uses quite a different layout to the helicopter to give it stability at low speed. It is cheap to run, takes off and lands on a ridiculously small footprint, and has a powered pusher propeller in addition to an unpowered main rotor.

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