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Gravia Lamp - a gravity-powered lamp!


February 20th, 2008 by ketyung

Gravia Lamp - a gravity-powered lamp!
Gravia Lamp is a super green LED floor lamp that makes use of gravity to generate power for it to glow for hundred years. The Gravia Lamp is the LED lamp that is completely free from electrical cable or any related structure as it needn’t be attached to any power source to shine for you.

The Gravia Lamp makes use of slow fall of a mass to spin a rotor to generate electricity to power up its 10 built-in high-output LEDs. And the lamp has a unique way of turning it on, which works more or less like any hour-glass mechanism. To turn it on, you’ll have to turn it over to move the weights from the bottom to the top of the lamp and then it’ll start its slow falling journey to generate electricity to power the LEDs up and shine the way for you.

The Gravia Lamp is a Virginia tech student’s project, who won the designer, Clay Moulton, the first place of the Greener Gadget award. It’s claimed that this lamp can be used for 200 years at 8 hours a day!

via [GadgetTastic]

Gravia Lamp,gravity-powered lamp,green gadget,greener gadget award

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9 Responses to “Gravia Lamp - a gravity-powered lamp!”

  1. Dorin Says:

    Where can I buy one?

  2. Murtaza Says:

    This sounds interesting, I mean a lamp which goes on for 200 years without any power source. So the question is how can it be turned off if we don’t need it. Is there a power switch or anything, its written it uses the concept of an hour glass..

  3. ketyung Says:

    stop the mass falling should be able to turn it off as no more power generated :)

  4. Dave Says:

    You know what else will turn it off? The laws of physics. This thing is a poorly done perpetual motion machine. I’d call it a scam, but I think the poor designer just never paid enough attention in Phys 101. It’s sad that the people judging the contest obviously didn’t either.

  5. ketyung Says:

    Unless the tube is a complete vacuum or else the moving mass shall be stopped by air friction over period of time….

  6. Copyrider Says:

    Dave: This is not a perpetual motion machine. The weight falls for about 8 hrs, then stops when it reaches bottom. The unit is then inverted so that gravity can again power it by making the weight fall. This isn’t a “perpetual motion machine” any more than a wind-up clock is.

  7. 200 Year Lamp | Got2BeGreen Says:

    [...] Source [...]

  8. xaviermtl Says:

    Where can I buy one?

  9. MOTIONMAN Says:

    For this lamp to work it requires it a person to replace the energy used by returning the weight to the start position.

    About as technical as the wind-up torch.
    But a good idea.

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