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"The primary attraction [of writing sf] is the sheer pleasure of creating something from whole cloth."
- Dan Simmons
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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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'Our study of your race has convinced us that you are not fitted to leave your planet in the present state of your civilization.'
'...the spreading beam of the deranging ray struck them, and Then one toppled and fell. Then another.'
'Within seconds the material was spread out over fifty yards, in a matter of hours it might occupy several cubic miles of space...'
'The men are dead, but their acquired wisdom lives on and I am the beneficiary.'
'Young people found the driverless car admirable for petting.'
'After twenty generations of shillyshallying...'
