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"[Science fiction] is the only kind of writing that allows you to look at the world we live in and change one piece at a time."
- Frederik Pohl
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| Stereoscopic Vernier and Cube | ||
| A means of photographing in depth. |
As far as I know, the moulage method of making a copy of tire tracks is still in use.
| “When did the police abandon the
moulage method of making casts?”
“Five years ago,” said Wohl. “We now photograph impressions with stereoscopic cameras. Impressions on fibrous surfaces are photographed in relief with the aid of the parallel light beam.” “I know all that,” Graham told him. “But why is that method now used?” “Because it’s handier, and absolutely accurate. It has been used ever since they found a way to measure stereoscopic depth by means of... heck!’’ — he risked a swift glance at his passenger, and concluded — “the Dakin stereoscopic vernier.” |
| Technovelgy from Sinister Barrier,
by Eric Frank Russell. Published by Unknown in 1939 Additional resources -
|
The picture was projected in three dimensions.
“Cute!” he murmured.
Finding the now-dead scientist’s
original and somewhat crude model of
his vernier, Wohl amused himself by
projecting its standard stereoscopic cube
upon a small screen. He twiddled the
micrometer focusing screw that controlled the cube’s perspective, made the
geometrical skeleton flat enough to appear almost two-dimensional, then deep
enough to resemble an apparently endless tunnel.
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Science Fiction
Timeline
1600-1899
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'The pitiless M rays pierced Earth and steel and densest concrete as if they were so much transparent glass...'
'Pina2bo would have to operate full blast for many years to put as much SO2 into the stratosphere as its namesake had done in a few minutes.'
'Nanny is different,' Tom Fields murmured... 'she's not like a machine. She's like a person.'
'We made a crude , small cell and were delighted - and, I admit, somewhat surprised - to find it worked.'
'...we've promised him a generous pension from the royalties.'
'The clothes and jewelery drew their tiny power requirements from her movements.'
'At the end of each appendage's eight fingers there are tinier appendages...'
'We want to do something to help those who are suffering from tooth loss or absence,' said lead researcher Katsu Takahashi.
