Google has developed an Android-to-Android sharing system called Android Beam that allows two NFC-equipped Android phones to share files when the two devices are tapped together.

CNN: STORY HIGHLIGHTS

In other words, what you have is trouble, all mixed together, with two-and-a-half major media markets frantically trying to beam a unifying signal across the whole bunch of them.

NPR: What It Means to Be a California Republican

If they are the same, the two photons will come out of the beam-splitter together.

ECONOMIST: Quantum information technology

The other two methods rely on specially shaped laser beams - instead of a beam whose intensity peaks at its centre and tails off gradually, the team is investigating two alternatives: solenoid beams and Bessel beams.

BBC: Nasa examines 'tractor beams' for sample gathering

The two parts are arranged so that when they return to the beam-splitter, the peaks of one wave are in step with the troughs of the other.

ECONOMIST: Fundamental physics

Early balance scales--first seen in Sumeria about 9, 000 years ago--consisted of two weighing pans attached to either end of a beam, which sat delicately balanced on a central pivot.

FORBES: Magazine Article

Last year, OPERA measured that neutrinos were making the 454-mile (730-kilometer) underground trip between the two labs more speedily than light, arriving there 60 nanoseconds earlier than a beam of light would.

MSN: Those faster-than-light neutrinos ... aren't - Technology & science - Science - LiveScience | NBC News