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terça-feira, 14 de dezembro de 2010

Mais notícias.

7 vezes a velocidade do Som?

Video: Navy Railgun Sets New Record, Launching A Metal Bullet To Mach 7 Speeds
By Rebecca Boyle Posted 12.10.2010 at 4:39 pm

The Navy just broke its own record for an awesomely powerful railgun, which can hurl a projectile hundreds of miles at superfast speeds without using explosives.

Today's 33-megajoule shot — powerful enough to launch 33 Smart cars at 100 mph — means the Navy can fire projectiles at least 125 miles, keeping military personnel at a safe distance from their targets, according to the Office of Naval Research.

Rather than using an explosion to fire a bullet, the futuristic weapon uses an electromagnetic current to accelerate a projectile to March 7.5. The video pretty much says it all.
Eis o Vídeo:

Uma imagem projectada numa mesa, vira um touch screen:

Interactive projector that turns any flat surface into a touch screen wins UK design award

By Grant Banks

Light Blue Opitcs (LBO) has won the Institution of Engineering and Technology (IET) Innovation Awards 2010 prize for Product Design with its Light Touch interactive projector. The device uses an infra-red touch sensing system that transforms a projected image into a virtual 10-inch touch screen. It allows users to interact with multimedia content and applications by touching the image, which can be projected onto any flat surface.

...E um banco feito em Madeira Prensada, que reage como uma mola:

E eis uma coisa do arco-da-velha, um escalímetro, para Modelos de Comboios à Escala:

 Vão buscá-lo, para imprimir, aqui:

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