Science Fiction Dictionary
A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z

Latest By
Category:


Armor
Artificial Intelligence
Biology
Clothing
Communication
Computers
Culture
Data Storage
Displays
Engineering
Entertainment
Food
Input Devices
Lifestyle
Living Space
Manufacturing
Material
Media
Medical
Miscellaneous
Robotics
Security
Space Tech
Spacecraft
Surveillance
Transportation
Travel
Vehicle
Virtual Person
Warfare
Weapon
Work

"SF is a controlled way to think and dream about the future."
- Gregory Benford

Delayed Action Stereoscopic Principle  
  Distinguishing far off space craft by relative speed against the fixed stars.  

But electromechanical vision has an advantage over bare sight; it is potentially able to discern lower angular speed than the eye. To the eye, a spaceship any distance awayis a dot of light, and all dots of light differ only in intensity, be they stars or spaceships. If the relative angular speed of a ship against the stars is low, the eye will miss it. But an instrument can be designed to detect it. The delayed-action stereoscopic principle, long used in naval range finders and in asteroid-belt pilot alarms, had been built into the entire spread of view screens. If a dot of light reproduced on a screen declined to hold steady, but progressed from cellet to celletórelative angular movementóthe gradient so established would trigger a circuit causing the moving dot to far outshine its fellows, and with a color which ran down the spectrum according to the angular speed. All this if the pilot threw in the proper test circuit.

Lazarus threw in the circuit. The high speed of the New Frontiers gave a long, effective base line for the pseudo-stereoscopy. Half a dozen dots of light obliged by glowing angry red, several times that number in other colors. He disregarded the rest, examined the half a dozen, running up the electronic magnification to the limit. None of them appeared to be on courses which would cross their own course ahead of them, or at all, for that matter.

From Methuselah's Children, by Robert Heinlein.
Published by Astounding Science-Fiction in 1941
Additional resources -

Comment/Join this discussion ( 0 ) | RSS/XML | Blog This |

Additional resources:
  More Ideas and Technology from Methuselah's Children
  More Ideas and Technology by Robert Heinlein
  Tech news articles related to Methuselah's Children
  Tech news articles related to works by Robert Heinlein

Articles related to Space Tech
The Far Side Of The Moon, By NASA (2015) And By PAUL (1932)
Sierra Space Inflatable LIFE Habitat Burst Pressure Test
Space-Based Solar Power A Priority - European Space Agency
Goldilocks Zones Found On The Moon

Want to Contribute an Item? It's easy:
Get the name of the item, a quote, the book's name and the author's name, and Add it here.

<Previous
Next>

Google
  Web TechNovelgy.com   

 

 

Technovelgy (that's tech-novel-gee!) is devoted to the creative science inventions and ideas of sf authors. Look for the Invention Category that interests you, the Glossary, the Science Fiction Invention Timeline, or see what's New.

 

 

 

 

Science Fiction Timeline
1600-1899
1900-1939
1940's   1950's
1960's   1970's
1980's   1990's
2000's   2010's

Science Fiction in the News

The Far Side Of The Moon, By NASA (2015) And By PAUL (1932)
"We had leisure to make a thorough observation of the hidden side of earth's satellite."

LoadRunner Robot Works Alone, Or In A Group
'They marched in unison, seven of them...'

Sierra Space Inflatable LIFE Habitat Burst Pressure Test
'It was like being inside a balloon...'

Longest Immersed Tunnel Will Connect Denmark and Germany
'... iron tubes... the ends of the tubes were joined to each other...to preserve it from the action of the seawater.'

Alcohol-Sensing Cars - NTSB Catches Up With Philip K. Dick (1963)
'Mr. Garden, you are in no condition to drive....'

Solar-Powered Remote-Control Cockroaches!
'A cable, here, from the controller to the interface plug... wires from that to the brain.'

SolarBotanic Tree For Solar Energy - Would You Need A Forest, Or Just One?
'The slender stalks of a sunshade-photocell collector...'

Metaverse Hardware - Run And Flail Like A Maniac, Or Lie Quietly?
'Holodeck 4 was waiting to be programmed...'

Robot Food Delivery Coming To Campus Near You
'... he rewired the delivery robot so that it would serve him midnight snacks.'

Are Craiyon Images Puddinged, ala Philip K. Dick?
'I stood in line for half an hour for this, and it's just a blob!'

More SF in the News

More Beyond Technovelgy

Home | Glossary | Science Fiction Timeline | Category | New | Contact Us | FAQ | Advertise |
Technovelgy.com - where science meets fiction™

Copyright© Technovelgy LLC; all rights reserved.