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" ... Artist’s illustration of two merging neutron stars. The rippling spacetime grid represents... [+] gravitational waves emitted from the collision, while the narrow beams are the jets of gamma rays that shoot out just seconds after the gravitational waves (detected as a gamma-ray burst by astronomers). Mass, in an event like this, gets converted into two types of radiation, but the level of collimation in the jets determines the energy received by an observer on Earth. Some hypernovae can also create collimated jets of this intensity. ... "
" ... But when you breathe in, there is no such collimation. You reduce pressure in your lungs by expanding them, and air is pushed into your mouth by external atmospheric pressure, so it comes from all directions. There is no way for the air to “know” that it is meant to come in a column in front of your mouth: instead, it enters from all directions. ... "
" ... Since it was first invented, there have been a number of ways humanity has devised of making a laser better. By finding different materials that enable you to make electron transitions at different energies, you can create lasers with a wide variety of specific wavelengths. By optimizing your laser's collimation design, you can increase the density of laser light tremendously at large distances, creating many more photons-per-unit-volume than you would otherwise. And using a better amplifier, you can simply create a more energetic, powerful laser overall. ... "
" ... This X-ray/radio composite of filament G0.17-0.41 spans 20 light-years, but is only ~1/5 of one ... [+] light-year wide. The tight collimation visible here against the background X-ray point sources is evidence that the X-ray emitting material is confined within a strand of magnetic field with a large strength: 1 milligauss or greater. ... "