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"The answer to the problem of information overload on the Net is reputations… engineer a system called a reputation server."
- Neal Stephenson
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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
resources:
More Ideas
and Technology from The Diamond Age
More Ideas
and Technology by Neal Stephenson
Tech news articles related to The Diamond Age
Tech news articles related to works by Neal Stephenson
Filter Wheel-related
news articles:
- Combat Feeding: Just Add Water - Any Water
- Magnetically Driven Rotary Microfilter 3D Printed
| Your Solar Electric Paint Is Ready, Larry Niven |
| How Long Till We Have These Tattoos? |
| Taza Aya Air-Curtain Tech Protects Turkey Workers |
| CoulombFly Solar-Powered Micro Aerial Vehicle Weighs 4.1 Grams |
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'Bill blinked at his own face under the plumed helmet...'
'...a robot detector circuit closed, activating a bell."
'Alex did not find it surprising that people... were electronically minting their own cash.'
'I had determined that my first attempt should be a visit to Mars.'
To follow the user like a pet while carrying their cargo!
'Deveet unhooked his catch and laid it on the bank beside him. It was a metal fish.'
'...waldoes in the screen followed in exact, simultaneous parallelism.'
'Seen close it was not completely flexible, but made instead of pivoted and smoothly finished segments.'
