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"Always listen to experts. They'll tell you what can't be done and why. Then do it."
- Robert Heinlein
 |
| Airlock | ||
| An intermediate chamber between airless space and the interior of a space craft. |
How can you go between the void of space and oxygen-rich interior of your space craft?
| DuQuesne reported briefly to the two girls. All three put on space-suits and crowded into the tiny airlock. The lock was pumped down. |
| From Skylark of Space,
by E.E. 'Doc' Smith. Published by Not known in 1928 Additional resources -
|
The phrase "air lock" and the basic purpose was first used in the mid-19th century in relation to sea-going vessels.
This is perhaps the earliest usage of the phrase in science fiction. However, the idea was put forward much earlier; see the entry for the double-door vestibule from Astor's 1894 novel A Journey in Other Worlds.
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