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

"The writing is clicking away in my head and piling up, and unless I get it on paper somehow it's going to create uncomfortable pressure in my skull."
- Isaac Asimov

Gravity Well  
  If you visualize spacetime as a flat, elastic plane, a planet will deform it, and it sits at the bottom of its own hole.  

He was the pilot and engineer, the only other Terrestrial on Mercury. When you dove this far down into the sun's monstrous gravitational well, you couldn't take a big crew along.
Technovelgy from Life Cycle, by Poul Anderson.
Published by Magazine of Fantasy and Science Fiction in 1957
Additional resources -

This expression quickly became a favorite of veteran sf writers; Heinlein, Clarke and Niven used it within a few years. Here's Niven using it as the subject of a short story, At the Bottom of a Hole (1966):

"He must have been on course for Luna when we found him. Ceres was behind him with the radar. Our ships were ahead of him, matching course at two gee. His mining ship wouldn't throw more than point five gee, so eventually they'd pull alongside him no matter what he did. Then he noticed Mars was just ahead of him."

"The hole." Garner knew enough Belters to have learned a little of their slang.

"The very one. His first instinct must have been to change course. Belters learn to avoid gravity wells. A man can get killed half a dozen ways coming too close to a hole. A good autopilot will get him safely around it, or program an in-and-out spin, or even land him at the bottom, God forbid. But miners don't carry good autopilots. They carry cheap autopilots, and they stay clear of holes."

More recently, Charles Stross uses it in Accelerando (2005):

“Mars is just dumb mass at the bottom of a gravity well; there isn't even a biosphere there.”

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

Additional resources:
  More Ideas and Technology from Life Cycle
  More Ideas and Technology by Poul Anderson
  Tech news articles related to Life Cycle
  Tech news articles related to works by Poul Anderson

Articles related to Space Tech
Reflect Orbital Offers 'Sunlight on Demand' And Light Pollution
Chrysalis Generation Ship to Alpha Centauri
The First Space Warship For Space Force
Is China Mining Helium-3 On The Moon's Farside?

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

Will AIs Give Better Results If You're Rude To Them?
'I said, "Listen up, motherf*cker.'

Black Fungus Blocks Radiation
'You were surrounded by Astrophage most of the time'

Liuzhi Process Now In Use In China
'He was in a high-ceilinged windowless cell with walls of glittering white porcelain.'

Reflect Orbital Offers 'Sunlight on Demand' And Light Pollution
'I don't have to tell you about the seven two-mile-diameter orbital mirrors...'

Will Robots Become Family Caregivers?
'The robant and the tiny old woman entered the control room slowly...'

Chinese Tokamak Uses AI To Keep Fusion Plasma Stable
'Guy named Otto Octavius winds up with eight limbs... What are the odds?'

Time Crystals Can Now Be Seen Directly
'It is as you thought when you constructed the time crystal, my master Vaylan.'

RoboBallet The Dance Of Cooperative Robots
'...an integrated seven-unit robot team.'

Chrysalis Generation Ship to Alpha Centauri
'This was their world, their planet — this swift-traveling, yet seemingly moveless vessel.'

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.