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I have no idea, but it seems that the usable water passes through the almond / walnut orchard, then is blown somewhere, maybe the Rockies?
For that matter, imagine I built an industrial size evaporator in California, and the intake was fresh water, with the output equal to the intake. So I've 'used' the water -- and not consumed a single gallon
But I did get this from the abstract, and it summarizes the point of their results:
"Our work highlights that, even in free space, the invariance of the speed of light only applies to plane waves."
So is this really a military need? Or just an excuse to spend cash on a new defense system? If ISIS or ISIL or OASIS (didn't they break up after that last album?) or whatever gets drones to fly up to serious altitudes, they're going to be larger Predator-sized clones (clones of drones, as it were) which can be shot down with bullet-sized bullets from the aforementioned F-35 or F-Anything for that matter.
(Sidenote, the 'F-Anything' would be an awesome combat fighter designation.)
And here's the money shot quote:
"Currently, approximately $1B in production spending can be expected to deliver $500M-$600M in profits,” the letter says. “Through his continued focus on financial discipline, Doug hopes to improve that ratio to a point where $800-$900M in production spending delivers $500-$600M in profits.”