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"...in fifty years, do you believe that people will be recognizably human?"
- Greg Bear
 |
| Sunshades | ||
| Sunglasses that darken and lighten based on ambient lighting. |
| Red Wig walked tall, tiny beads of perspiration seasoning her upper lip, eyes hidden behind sunshades which had darkened themselves as much as they could. |
| Technovelgy from This Immortal,
by Roger Zelazny. Published by Ace Science Fiction in 1965 Additional resources -
|
Photochromic glass were developed by Corning in the early 1960's; they contain a layer of material that will darken when exposed to ultraviolet rays.
I still think that this use is a good example of how science fiction can promote a use for technology before it becomes generally available. Glasses that contained this material were not commercially available until the mid-1970's.
Compare this idea to the polawindows from Frank Herbert's 1972 novel The Godmakers.
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'Then she looked up with a smile and moved closer to the camera.'
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'Michel Ardan, as a Frenchman, was declared chief cook, an important function, which raised no rival.'
'Sapiro’s computer just kept dialing at random, hanging up on humans, until it got a fellow computer of the same type as itself.'
'I request that you feed the correlation between those dots and the levers of the panel into my memory banks.'
