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 blue pigment Mayans used to paint temple walls 1, 400 years ago was made of particles only about 50 nanometers across.
"You can see a few almost every clear dark night if you look long enough, but periodically the Earth passes through a dense swarm of these particles which have only recently come from their parent comet, giving what we call a meteor shower, " he said.
In the 1970s accelerators were capable of ramping up the speed and thus the energy of particles, but could only smash them into a stationary target.
Sulphate particles, meanwhile, survive only a few years in the atmosphere.
Made from a flexible polymer film suffused with fluorescent particles, the prototypes catch only a specific wavelength of light and shoot it to an array of sensors that surround the sheet's edge.
Cleaning the wafers could affect solar samples because the particles -- atomic isotopes emitted by the sun -- are only shallowly embedded in the tiles.
When the universe had cooled some more, those particles and antiparticles should have gone on to annihilate one another, leaving only photons behind.
ECONOMIST: Particle physics makes sense, but it assumes too much
Using the underground Sudbury neutrino detector, an international group of researchers has been able to determine that the observed number of electron-neutrinos is only a fraction of the total number emitted from the Sun - clear evidence that the particles change type en route to Earth.
Only time will tell if other kinds of devices are at risk from those little metal particles that tainted many a laptop cell, but if we had to proffer a guess, we'd say it's pretty unlikely that the QA breakdown which allowed so many batteries to become fire hazards was limited only to the manufacturing processes for notebook power packs.
ENGADGET: CPSC: Sony recall will include laptop batteries only
But that would be possible only if they had mass and the standard model says that, like photons (the particles of which light is composed), they should be massless.
ECONOMIST: The news that neutrinos have mass is both good and bad
Studies of ash captured from the air show that for every one of the largest particles (about 300 microns) there are a million or more with a size of only around two microns.
ECONOMIST: Volcanoes and air travel: Small eruption in Iceland | The
After orchestrating 2 million collisions between lead nuclei and protons, like the sort you see above, the collider's Compact Muon Solenoid group and researchers at MIT suspect that stray, linked pairs of gluon particles in the mix were signs of color-glass condensate, a currently theory-only form of matter that sees gluons travel in liquid-like, quantum-entangled waves.
ENGADGET: Large Hadron Collider may have produced a previously undetected form of matter
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