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Science Fiction
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"We [science fiction writers] always wanted to believe in "private sector" space -- hucksters make better characters than a government does."
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In the world of Dune, seeing has a variety of implications, religious (state of consciousness, prescient ability to see the future) as well as practical. The hawk, symbol of the ruling Atreides family, is also a far-seeing animal.
The oil lens is described as "hufhuf oil held in static tension by an enclosing force field within a viewing tube as part of a magnifying or other light-manipulation system."
Since each oil lens element can be manipulated one micron at a time, these systems were considered the finest available for the manipulation of visible light (in the novel).
I've found references to ships in the 1920's that used oil lens lanterns, but they probably just burned the oil for illumination. And microscopes use oil lenses, but they are just regular glass lenses used with an immersion oil. So, I can't find anyone earlier than Herbert with this idea.
And, in a recent news story, researchers at Bell Labs, US, have made a 2mm-diameter liquid microlens with a position and focal length that can be adjusted by applying a voltage. The team is now using the lens in optical switching and optical signal processing. (Applied Physics Letters 82 316).
At the turn of the century, astronomers tried creating reflective mirrors for astronomical telescopes by putting a pool of mercury on a turntable, and then spinning the table at a constant rate. The resulting parabolic curve was obtained without the many hours of polishing; however, the surface was marred by irregularities caused by drive speed variations.
If you are interested in the ultimate in exotic lenses, take a look at the gravity lens from Larry Niven's 1973 novel Protector. Comment/Join this discussion ( 2 ) | RSS/XML | Blog This | Additional
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Science Fiction
Timeline
'If Anyone Is Watching Earth...'
'Our study of your race has convinced us that you are not fitted to leave your planet in the present state of your civilization.'
Epirus High-Power Microwave Defeats Drones
'...the spreading beam of the deranging ray struck them, and Then one toppled and fell. Then another.'
Cloud Of Space Rubbish From China's Long March Rocket
'Within seconds the material was spread out over fifty yards, in a matter of hours it might occupy several cubic miles of space...'
Living Human Neuron Biological Compute Rack
'The men are dead, but their acquired wisdom lives on and I am the beneficiary.'
Martha Stewart Approves Ojai 'Living Room On Wheels'
'Young people found the driverless car admirable for petting.'
Is There A Global Problem With Who Is Having Children?
'After twenty generations of shillyshallying...'
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