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[BBC News] - Star Trek style 'tractor beam' created by scientists - Page 2

post #11 of 19
Quote:
Originally Posted by Crazy9000 View Post

1. Use tractor beam on asteroid
2. Heat melts the metals in asteroid making it easy to process
3. ???
4. Profit


Unfortunately, I don't really see any way around generating a lot of heat with this method... still will have quite a few applications eventually I bet.

Novelty "microwaves" that levitate your food as it cooks?
post #12 of 19
hmm small objects only, eh?
does that mean i can pick my nose with it? i want those nostrils spotless
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post #13 of 19
Thread Starter 
Quote:
Originally Posted by Warhaven View Post

Novelty "microwaves" that levitate your food as it cooks?

tongue.gif
For some fields like bio-medical this could have some very useful applications once it is a little more developed.
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post #14 of 19

Awesome. But heat is an issue in space as well.

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post #15 of 19
What about Newton's third law? Wouldn't this "tractor beam" end up moving both objects?

In other words, wouldn't a spaceship get dragged towards a more massive object instead of the other ways around?
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post #16 of 19
Quote:
Originally Posted by SectorNine50 View Post

What about Newton's third law? Wouldn't this "tractor beam" end up moving both objects?

In other words, wouldn't a spaceship get dragged towards a more massive object instead of the other ways around?

Yes but the source could always employ thrust to counter. Not ideal but I can see many uses for this technology if they were to overcome the heat and energy issues.
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post #17 of 19
Thread Starter 
Quote:
Originally Posted by SectorNine50 View Post

What about Newton's third law? Wouldn't this "tractor beam" end up moving both objects?

In other words, wouldn't a spaceship get dragged towards a more massive object instead of the other ways around?

They said in the article
Quote:
He said: "Unfortunately there is a transfer of energy. On a microscopic scale that is OK, but on a macro scale it would cause huge problems.

"It would result in a massive amount of heating of an object, like a space shuttle. So trapping a space ship is out of the question."

As Sarec said, if it was able to be implemented a ship could always use thrust to counter this, but unfortunately that is not the only issue with moving a large object with this technique.
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post #18 of 19
Quote:
Originally Posted by Sarec View Post

Yes but the source could always employ thrust to counter. Not ideal but I can see many uses for this technology if they were to overcome the heat and energy issues.
Quote:
Originally Posted by [PWN]Schubie View Post

They said in the article
As Sarec said, if it was able to be implemented a ship could always use thrust to counter this, but unfortunately that is not the only issue with moving a large object with this technique.

Ah shoot... so moving planets probably isn't a reasonable goal for this thing... tongue.gif
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post #19 of 19
This is awesome, because theoretically, and given the advance of technology, you could have an array of these light devices, which would scale up to meet and desired strength. For example, some useful advances could be a space elevator by dragging up objects via a light pulse.
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