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

"As a writer, I don't want to chew my cud. I don't want to have to spit out and regurgitate the same stuff again."
- Harlan Ellison

Gravity Detector  
  A device capable of detecting the gravitational field of a distant mass.  

As far as I know, this is the first use of this term. How could you be sure that an object was coming toward you in space if you could not see it and if it did not occult light sources?

Professor Paxton was glancing nervously from speed indicator to gravity detector, and from gravity detector to chronometer. Presently he turned a series of six big wheels one after another. Then he shifted a little, silvery lever .from a vertical to a horizontal position. I felt the whole craft suddenly rotate in an alarming fashion, but it was all over in an instant. The flat base of the rocket was now toward the moon instead of its pointed nose.
Technovelgy from The Lunar Chrysalis, by Raymond Z. Gallun.
Published by Amazing Stories in 1931
Additional resources -

Jack Williamson makes good use of this idea in his 1936 story The Cometeers:

"...there was nothing we could see with the tele-periscopes, but the gravity detectors betrayed an invisible object of fifty thousand tons, approaching behind us - as if it had followed us from Neptune."

The gravity detector turns out to be a useful device for ordinary journeys through the solar system as well (more from The Cometeers):

"An asteroid?" Jay Kalam inquired. "You're certain?"

"I am," Bob Star said, too busy to turn. "The gravity detector shows a mass dead ahead. Millions of tons. The deflector fields wouldn't swing it an inch.

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

Additional resources:
  More Ideas and Technology from The Lunar Chrysalis
  More Ideas and Technology by Raymond Z. Gallun
  Tech news articles related to The Lunar Chrysalis
  Tech news articles related to works by Raymond Z. Gallun

Articles related to Space Tech
JAXA Int Ball 2 Coming Right Along As Star Wars Remote
Space Traffic Management (STM) Needed Now
Denmark Joins The 'Zero Debris Charter' To Clean Up Space
Starship Special Edition For Lunar Shuttle

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

JAXA Int Ball 2 Coming Right Along As Star Wars Remote
'Hocus-pocus religions and archaic weapons are no substitute for a good blaster at your side.'

Robot Bricklayer Or Passer-By Bricklayer?
'Oscar picked up a trowel. 'I'm the tool for the mortar,' the little trowel squeaked cheerfully.'

Robot Gas Station Attendant Pumps Gas For You
'... he waited for the robotrix attendant to finish fueling up his ship.'

Engineer Creates Crazy Motorized Track Hospital Bed
The Roujin Z system provides care to fully bedridden patients - and then some!

Tiny Flying Robot Weighs Just One Gram
'Aerostat meant anything that hung in the air. This was an easy trick to pull off nowadays.'

Some Ringworld Configurations Are Stable
'The Ringworld had no horizon. There was no line where the land curved away from the sky.'

TRANSFORM Dynamic Furniture Concept Becomes What You Need
'An adjustment panel outside the door would cause it to extrude various appurtenances in memory plastic...'

Harvard Metamaterials Change Structure Instantly
'Annealed in any shape for a time, and codified, the structure of that shape is retained down to the molecules.'

SnapBot Robots - You Choose Their Legs And They Choose Their Gaits
It's not really polite to tear the limbs off robots.

Dino From Magical Toys An AI Companion To Children
'...the imaginary companions discovered by needful children.'

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.