The world’s first x-ray laser is not only a true laser, but it’s an extremely good one, according to measurements reported 30 September in Physical Review Letters. Researchers studying the Linac Coherent Light Source (LCLS) characterized the coherence of the laser–the degree to which the light waves are synchronized–and found that it produces the most coherent x-ray radiation ever measured.
Super Small: Top 20 Microscope Photos of the Year
We’re never disappointed with the photos from the Nikon Small World contest, and the top 20 judges picks contained in this gallery suggest that the photographers just keep getting better. These photos were selected from more than 2,000, but if you disagree with the judges, you can still pick your favorite in the popular vote contest throughout October.
Shamelessly stolen from ZapperZ, because it’s so neat. Is there anything left of the match?
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