Âé¶¹ÒùÔº

Search results for birefringent

Archaeology Mar 26, 2014

Researchers suggest Vikings used crystals with sun compass to steer at night

(Âé¶¹ÒùÔº) —A team of researchers working in Hungary has proposed that a sun compass artifact found in a convent in 1948 might have been used in conjunction with crystals to allow Vikings to guide their boats even at night. ...

Condensed Matter Jan 31, 2014

It's alive! Scientists combine liquid crystals and living bacteria

(Âé¶¹ÒùÔº) —The prospect of integrated living organisms into a non-living substrate has long held a compelling appeal for those investigating active matter – the study of a type of easily-deformable out of equilibrium ...

Quantum Âé¶¹ÒùÔºics Nov 11, 2013

Âé¶¹ÒùÔºicists 'uncollapse' a partially collapsed qubit

(Âé¶¹ÒùÔº) —One of the striking features of a qubit is that, unlike a classical bit, it can be in two states at the same time. That is, until a measurement is made on the qubit, causing it to collapse into a single state. ...

Quantum Âé¶¹ÒùÔºics Aug 30, 2013

Âé¶¹ÒùÔºics team suggests possible way to make quantum cryptography available in handheld machines

(Âé¶¹ÒùÔº) —A team of physicists at Bristol University in the U.K. has proposed a possible way to allow for quantum cryptography between a large station and a small hand held device. They describe such a technique in a ...

General Âé¶¹ÒùÔºics Apr 30, 2013

Errors on Viking sun compass hint at alternative purpose

Although eleventh-century Vikings did not have magnetic compasses at their disposal, it is thought that they could determine their orientation at sea using sun-compasses. Sun-compasses use the position of the sun's shadow ...

Archaeology Mar 8, 2013

Researchers: We may have found a fabled sunstone (Update)

A rough, whitish block recovered from an Elizabethan shipwreck may be a sunstone, the fabled crystal believed by some to have helped Vikings and other medieval seafarers navigate the high seas, researchers say.

Optics & Photonics Mar 3, 2013

Getting around the 'uncertainty principle': Âé¶¹ÒùÔºicists make first direct measurements of polarization states of light

Researchers at the University of Rochester and the University of Ottawa have applied a recently developed technique to directly measure for the first time the polarization states of light. Their work both overcomes some important ...

General Âé¶¹ÒùÔºics Oct 15, 2012

Accelerators can search for signs of Planck-scale gravity

(Âé¶¹ÒùÔº)—Although quantum theory can explain three of the four forces in nature, scientists currently rely on general relativity to explain the fourth force, gravity. However, no one is quite sure of how gravity works ...

Condensed Matter Mar 26, 2012

Researchers develop new method for the production of microlenses

Inspired from Mother Nature: The body of the brittlestar Ophiocoma wendtii is studded with tiny crystalline lenses made of calcium carbonate. Microlenses like these are of great interest technologically, yet they have always ...

Optics & Photonics Dec 15, 2011

Âé¶¹ÒùÔºicists 'turn signals' for neuron growth

(Âé¶¹ÒùÔºOrg.com) -- A new paper scheduled for publication in the January issue of Nature Photonics describes the use of spinning microparticles to direct the growth of nerve fiber, a discovery that could allow for directed growth ...

page 13 from 15