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"Building one space station for everyone was and is insane: we should have built a dozen."
- Larry Niven
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| Slow Glass Rod | ||
| A transparent glass rod that makes light travel so slowly that it can trap light within its depths. |
You've heard of burning bugs with sunlight concentrated with a magnifying glass? That's for sissies who can't figure out a different way to concentrate sunlight - by slowing it down.
| He held a contraption made of a glass rod and assorted wires. Methuen sighted along his glass rod and pressed a button. A pop... and a flash!
"By applying the right e.m.f. to pure crown glass, its possible to raise its index of refraction to a remarkable degree. The result is that the light striking the glass is so slowed up that it takes weeks to pass through it in the ordinary manner. The light that is thus trapped can be released by making a small spark near the glass. "I can shoot an hour's accumulated light energy out the front end of the rod in a very small fraction of a second. |
| From The Exalted,
by L. Sprague de Camp. Published by Astounding Science-Fiction in 1940 Additional resources -
|
Science fans will recognize one of the main properties of Bose-Einstein condensates, which can actually trap light waves, or slow them down to an inch a minute. Read a bit more about Bose-Einstein condensates; also, read about a modern experiment in which light is captured in a crystal.
Science fiction fans may recall the scenedows from Bob Shaw's 1968 story Light of Other Days.
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'The world ... is drenched in unfamiliar information all the way to the horizon.'
'He saw one hiss by him as he rounded the corner, trailing a short whip antenna...'
'It may be organic damage. It may be permanent. Time'll tell, and only after you are off Substance D for a long while.'
It's the polite thing to do, and has been the polite thing to do for about four generations.
