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"A science fiction story is a story built around human beings, with a human problem and a human solution, which would not have happened at all without its scientific content."
- Theodore Sturgeon
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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 -
|
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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'The observation vehicle was of that peculiar variety used in conveying a large number of people across rough terrain.'
'The real border was defended by... a swarm of quasi-independent aerostats.'
'I ... set my automatic astronomical instruments to searching for a habitable planet.'
'...haven't you a section of the factory where only robot labor is employed?'
'... oblongs were all over the floor and surfaces.'
