If they are the same, the two photons will come out of the beam-splitter together.
Her right leg missed the beam as she came down from a leaping split.
The beam, found in the wreckage of the World Trade Centre, was a totem for rescuers.
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Tory MSP David Davidson has also submitted several questions about the beam to Presiding Officer George Reid.
The beam of X-rays scatter and produce an image from which a 3D structure can be determined.
After flipping off the beam, the judges gave her a score that put her in fourth place.
The result is that the beam twists as it passes through the spiral and interferes with itself.
The presence of smoke re-aims or reflects the beam so that it is picked up by the receiver.
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Every time a fly gets inside and breaks the beam, it gets counted.
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The beam itself will be produced by a device called a fibre laser.
Now shine a tiny laser beam through the token, noting exactly where and at what angle you aimed the beam.
Gulets aren't created for speed but for drifting and trawling, so they are broader in the beam than most yachts.
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The beam will be aimed at a collector on the other side of the hangar, rather than several kilometres away.
Raisman, the last performer on the beam, paced in front of the beam as officials reviewed video of her routine.
When the reflected object beam and the reference beam are recombined, they create an interference pattern that encodes the 3-D image.
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Because the beam is being so precisely targeted, a bigger dose can be given, equivalent to several sessions all at once.
But before worrying about the mote in a distant polluter's eye, it makes sense to consider the beam in thine own.
That means the parts of the beam falling on different steps are retarded by different amounts with respect to each other.
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The vertical clearance from the roadway to the beam is 14.6 feet.
The beam of Xiao's house in Mianzhu City in Sichuan province collapsed during the quake, trapping him, China's state-run television CCTV said.
The force helicopter was scrambled to find the source of the beam.
Moreover, engineers have worked out how to make laser beams more intense by using short lengths of optical fibre to narrow the beam.
Gymnasts Aly Raisman and Catalina Ponor did not betray a single emotion as they awaited the results of an appeal of the beam.
In the case of Dr Sweeney's fibre laser, the beam will have a wavelength of 1.5 microns, making it part of the infra-red spectrum.
Managing stress takes a lot of work on top of training to become the fastest hurdler in the world or the best on the beam.
In other words, they could adjust the beam to only pull the 400 nm particles, then change it to only pull the 1000 nm particles.
The beam reflects off any objects, including people, within the area.
People's reaction, when hit by the beam, is usually to flee.
This fireball, which lasts just 10 million, billion, billionths of a second, can be detected because it absorbs jets of particles produced by the beam collisions.
She stayed calm, diverted the Royal Mail plane, then gave the Russian pilot the instructions he needed to find the beam again while avoiding the radio masts.
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