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"If we're going to be consistent and advocate freedom of speech we have to advocate freedom of encrypted speech too. The genie is out of the bottle, cryptologically."
- Neal Stephenson
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| Molecular Sieve | ||
| A device that can extract any element from seawater. |
Clarke begins the story by pointing out that a cubic mile of sea water contains millions of tons of dissolved minerals - how best to get at them, when there are only about fifty pounds of gold per cubic mile?
| I put some of my young men to work and they have made what we call a 'molecular sieve.' ... It depends on very advanced wave-mechanical theories for its operation, but what it actually does is absurdly simple. We can choose any component of sea water we like, and get the sieve to take it out. With several units, working in series, we can take out one element after another. The efficiency's quite high, and the power consumption negligible. |
| Technovelgy from Tales from the White Hart,
by Arthur C. Clarke. Published by Ballantine Books in 1957 Additional resources -
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This device comes from the short story The Man Who Ploughed The Sea, which was published in 1957 with the publication of Clarke's third collection of short stories Tales From The White Hart.
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'...small electric motors at the principal joints worked the prosthetic framework by means of steel cables...'
'Living protoplasm incorporated into the Ampek F-a2 recording system...'
'Twoflower's Luggage, which was currently ambling along on its little legs...'
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'The peculiar quality of this light, which gave it its great preeminence over all other penetrating rays...'
'The overworked leg motor would have to cool down before he could work on it...'
‘Where to, sport?’ the starter at cab relay asked.
