Blog Posts

quarta-feira, 2 de fevereiro de 2011


Que espécie de Engenhocas não quererá construír esta Máquina de Raios Solares?
Ponham um Cadinho no foco desta bizarma, e derretem Alumínio com ela!

Look what I made, mum! Teenager builds 'death-ray' which can burn through almost anything

By John Hutchinson
While many teenagers are content to sit at home playing computer games, this one has set his sights on something a little more ambitious.
Eric Jacqmain, from Indiana in the US, covered an ordinary fibreglass satellite dish with 5,800 tiny mirror tiles - and made his very own 'death ray'.
When aligned correctly it can generate a heat spot a couple of centimetres across, with an intensity of 5,000 shining suns, the 19-year-old claims.

Um passo mais perto dum Painel Solar que aproveite todo o Espectro Solar:

A Step Closer to Practical Full Spectrum Solar Cells

A solar cell’s ability to convert sunlight to electric current is limited by the band gaps of the semiconductors from which it is made. For example, semiconductors with wide band gaps respond to shorter wavelengths with higher energies (lower left). 

 ...E mais um Artigo sobre o Makerbot...

Inside Makerbot: the Future of 3D Printing?
by Quinn Norton
Is the MakerBot a hacker-friendly version of My Little Cupcake or a harbinger of a major sea change?

We are in a warehouse near downtown Brooklyn dubbed the Botcave. We’re talking with MakerBot Industry founders Bre Pettis, Zach “Hoeken” Smith, and Adam Mayer, and we’re contemplating a future where we can all instantly download, distribute, and manufacturer anything, anytime, anywhere. The implications are mind-boggling.

The MakerBot is just like any other printer, except it prints with plastic in three dimensions.

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