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| Double-Pane Vacuum Window | ||
| Double-pane glass separated by vacuum. |
This is an early reference to this idea in science fiction. Although the double pane idea had been around since the 1860's, the technology for making a glazed double pane window wasn't really perfected until around 1915 and even then the "filler" was usually some sort of inert gas.
Here's a window onto Mercury from an observatory.
| The old astronomer rose
to his feet, and walking with a peculiar
rolling gait led the way to a window,
fitted with double panes of darkened
glass, with a vacuum in between.
Briggs pointed beyond the window, without saying anything further. Southern peered out across the heat-blasted plain... |
| From The Achilles Heel,
by Raymond Z. Gallun. Published by Amazing Stories in 1940 Additional resources -
|
As far as I know, double pane windows separated by true vacuum are still being worked on, because air pressure causes them to collapse. Most seem to involve the use of transparent spacers.
The vacuum between two surfaces is the Dewar flask idea.
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'Their playmates were not “real,” but they were a lot realer than, say, a Betsy-Wetsy doll.'
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'... the imprint of her image on the telephoto cell.'
'The entire expanse, twenty kilometers square, was covered ... the photo-electric elements which transformed the solar heat direct into electric energy.'
'Chia recognized the square as the control-face of the computer she'd seen in his room.'
'The automatic packing machine could pack anything from a small package a few inches square up to a box two feet high by three feet long.'
