image: Physicists have developed a method for drastically narrowing the emission spectrum of an ordinary diode laser, like that in a laser pointer, for use in compact chemical analyzers that can fit ...
For too long the US was using $2 million missiles to fight $300-$30000 threats. No longer. There is shift and and armraces of the cheap, good enough drones. The US now has cheap $35000 drones too and ...
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