Notícias

Bolhas de ar debaixo dos cascos dos cargueiros, podem poupar até 15% de Combustível!

Airships of the sea
Naval architecture: Blasting a cushion of air bubbles under a moving vessel’s hull can reduce its fuel consumption 

IF YOU blow a lot of air bubbles under a ship, and keep them coming, “good things will happen”, says Steven Ceccio, an expert on bubbles at the University of Michigan’s mechanical-engineering department in Ann Arbor. When air is pumped rapidly out of small holes in a ship’s hull, the swarming bubbles will quickly join together and coat the hull with a layer of air a centimetre or two thick. This reduces drag, because air offers far less resistance than water.

 http://www.economist.com/node/17647555

Do Facebook da Ponoko, poderão imprimir os Vossos Circuitos Integrados, Transistor por Transistor, na Impressora 3D Makerbot:

MakerBot Printable Transistors

by Ponoko on Monday, December 27, 2010 at 1:47pm

The Unicorn Pen Plotter is a versatile addition for anyone’s MakerBot.
Mr.Kim and John Sarik saw the magic in the Unicorn, and when they put their heads together some interesting developments soon emerged.

Presented at Botacon 0 was a work-in-progress demonstration of their project where transistors are being plotted using sub-micron silver inks.

I think we have a working process in hand. Now it is only a matter of engineering to refine it.

 http://www.facebook.com/notes/ponoko/makerbot-printable-transistors/477653672546

...Por isso, visitem a página do Botacon:

 

http://www.botacon.com/