Ram Thapa

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Physicists create reversible laser tractor beam

Physicists have built a tractor beam out of lasers that can both repel and attract objects across distances 100 times farther than previously possible.<p>The groundbreaking tractor beam, made of a hollow laser beam (a laser bright around the edges and hollow in the centre), was able to move particles …

Quantum Mechanics

New solar cloud identified after space weather study

<b>A new form of solar cloud has been identified by research into "space weather" led by Dundee University.</b><p>Dr Miho Janvier worked alongside colleagues in Paris and Buenos Aires to study a new kind of magnetic cloud emanating from the Sun.<p>The cloud is a smaller, distinct version of those caused by …

Buenos Aires