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Tractor beam progress...

DrLeftover

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21 October 2014

Scientists have created a tractor beam that can drag objects for distances of up to 20cm - around 100 times further than in previous experiments.

The doughnut-shaped laser is also reversible - so it can either repel or attract objects.

In future, these beams could be used to study atmospheric pollutants, or to retrieve delicate particles of material for examination.

http://www.bbc.com/news/science-environment-29708358
 
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