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"I suspect that religion is a necessary evil in the childhood of our particular species. And that's one of the interesting things about contact with other intelligences: we could see what role, if any, religion plays in their development."
- Arthur C. Clarke
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| Filter Wheel | ||
| A device for filtering liquid or gas to obtain a pure sample of a selected molecule. |
Many science fiction authors of the late twentieth century are obsessed with cleaning things up. The air and the water, for instance.
| Dirty air and dirty water came in and pooled in tanks. Next to each tank was another tank containing slightly cleaner water or cleaner air. The tanks at the end were filled with perfectly clean nitrogen gas and perfectly clean water. The line of tanks was referred to as a cascade...All the action took place in the walls separating the tanks, which were not really walls but nearly infinite grids of submicroscopic wheels, ever-rotating and many-spoked. Each spoke grabbed a nitrogen or water molecule on the dirty side and released it after spinning around to the clean side. |
| Technovelgy from The Diamond Age,
by Neal Stephenson. Published by Bantam Books in 1995 Additional resources -
|
This kind of filter reminds me of Maxwell's demon, an amusing thought experiment by Scottish physicist James Clerk Maxwell (1831-1879), who revolutionized electromagnetism. The idea is that the demon operated a sort of gateway; put him at the boundary between two rooms and he could sort the fastest moving molecules into one room and the slowest moving into another. Voila! One room is hot and the other is cold, all without expending any energy. Stephenson's device could work, though; he doesn't say anything about it not requiring any energy to operate.
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Additional
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More Ideas
and Technology from The Diamond Age
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and Technology by Neal Stephenson
Tech news articles related to The Diamond Age
Tech news articles related to works by Neal Stephenson
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news articles:
- Combat Feeding: Just Add Water - Any Water
- Magnetically Driven Rotary Microfilter 3D Printed
| Terraformer Industries Make Methane |
| Ridiculous 'Ghost Murmur' Tech Still Science Fiction |
| Infrared Contact Lenses To See In The Dark |
| Can 'Tactical Umbrellas' Shield One From Drones |
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'Chris, the City Fathers are not interested in your welfare; I suppose you know that. They're interested in only one thing: the survival of the city.'
'Drake was the young spatial engineer he employed to terraform the little rock...'
'It diverts integers of the data, the fundamental message-units, so that they no longer agree.'
'Clothes are no longer made from dead fibers of fixed color and texture that can approximate only crudely to the vagrant human figure...'
'Books were just a commodity that had to be produced, like jam or bootlaces.'
