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

"In science fiction one can say a great many things that are unpalatable, because it's expressed as science fiction you can slip it past their defenses."
- Frederik Pohl

Geosynchronous Satellite  
  A communications satellite that appears to "hover" over one spot on the earth's surface; it goes around the earth in twenty-four hours.  

Herman Potočnik published a book proposing that it was possible to live in space in 1929. In it, he talked about inhabited space stations in geostationary orbit. Clarke expanded on this idea, proposing a trio of devices poised over the earth and able to communicate with each other in direct line of sight.

An 'artificial satellite' at the correct distance from the earth would make one revolution every 24 hours, i.e., it would remain stationary above the same spot and would be within optical range of nearly half the earth's surface. Three repeater stations, 120 degrees apart in the correct orbit, could give television and microwave coverage to the entire planet.
Technovelgy from V2 for Ionospheric Research, by Arthur C. Clarke.
Published by Wireless World in 1945
Additional resources -

In the same document, Clarke elaborates on the capabilities of a telecommunications satellite:

A rocket which can reach a speed of 8 km/sec parallel to the earth's surface would continue to circle it for ever in a closed orbit; it would become an ``artificial satellite.'' V2 can only reach a third of this speed under the most favourable conditions, but if its payload consisted of a small one-ton rocket, this upper component could reach the required velocity with a payload of about 100 pounds. It would thus be possible to have a hundredweight. of instruments circling the earth perpetually outside the limits of the atmosphere and broadcasting information as long as the batteries lasted. Since the rocket would be in brilliant sunlight for half the time, the operating period might be indefinitely prolonged by the use of thermocouples and photo-electric elements.

The period of revolution of a satellite around the earth is fixed by its distance from the center of the earth. It just so happens that if you put a satellite in orbit 22,300 miles above the earth's surface in the same direction as the earth's rotation, it will appear to stand still above the same spot. Compare this to the International Space Station, only about 250 miles above the surface of the earth, which goes once around the earth every 90 minutes or so.

The first geosynchronous satellite was Syncom 2. Syncom was a program of three experimental, active communication satellites which was started by NASA in 1961.

See also this PDF reproduction of the October, 1945 Wireless World article entitled "Extra-terrestrial Relays: Can Rocket Stations Give World-Wide Radio Coverage?"

Comment/Join this discussion ( 7 ) | RSS/XML | Blog This |

Additional resources:
  More Ideas and Technology from V2 for Ionospheric Research
  More Ideas and Technology by Arthur C. Clarke
  Tech news articles related to V2 for Ionospheric Research
  Tech news articles related to works by Arthur C. Clarke

Geosynchronous Satellite-related news articles:
  - World's Highest Resolution Seamless Display Has 60M Pixels
  - Did Arthur C. Clarke Predict GPS?

Articles related to Communication
CD, DVD Bit Rot And PKD's Civic Notification Distorter
Zoom Education Idea Is 100 Years Old
'A Sign in Space' Gives Practice In Decoding ET Messages
MyManu Titan 'Screenless Smartphone'

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

18 Wheels Mutant Centipede Vehicle
'If a centipede were a dinosaur and made of metal to boot...'

Octopus Suckers Inspire Transdermal Patches
'...a capsule which he placed against his wrist.'

Robotic Hands Have More Than One Use
'The crawling, exploring object was V-Stephen's surgeon-hand...'

Space Weather To Universe Weather
'It radiates outward in a cone which, by the time it has reached our section of space, is many lightyears across.'

That's MOXIE! Terraforming Mars Baby Steps
'Drake was the young spatial engineer he employed to terraform the little rock.'

'No, I'm Not A Robot' - Robot
'... with a weird simulation of life, the ten forked ends of each arm commenced a rattling pressing of the buttons.'

Missing Jet Finally Found
Ah, what could have been - still in the future.

Philippines Coast Guard Cuts Chinese Barrier
'Each of the four areas is enclosed by a sonic wall...'

Barista Robot Perfects Latte Swirl With Multi-DOF Wriggle
'It's done with a flip of the third joint of the tentacle on the down beat.'

Vendetta 2023 All-Terrain Skateboard Could Use Neal Stephenson's Smartwheels
'If you surf over a bump... If you surf over a pothole...'

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.