News tagged with shock waves

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Diamond is one tough cookie

(PhysOrg.com) -- Most people know that diamond is one of the hardest solids on Earth, so strong that it can easily cut through glass and steel. Surprisingly, very little is known about the strength of diamond ...

Jan 26, 2010 4.2 / 5 (17) 1 | with audio podcast

Flipping a photonic shock wave

A team of physicists has directly observed a reverse shock wave of light in a specially tailored structure known as a left-handed metamaterial. Although it was first predicted over forty years ago, this is ...

Nov 02, 2009 4.2 / 5 (5) 1

A Galaxy Collision in Action

This beautiful image gives a new look at Stephan's Quintet, a compact group of galaxies discovered about 130 years ago and located about 280 million light years from Earth. The curved, light blue ridge running ...

Jul 09, 2009 4.7 / 5 (10) 2

Comet impact theory disproved

New data, published today, disproves the recent theory that a large comet exploded over North America 12,900 years ago, causing a shock wave that travelled across North America at hundreds of kilometres per hour and triggering ...

Jan 26, 2009 3.1 / 5 (10) 6