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

"One of the great tragedies of mankind is that morality has been hijacked by religion. So now people assume that religion and morality have a necessary connection."
- Arthur C. Clarke

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
Solitary Black Hole Wanders In Space
Spaceplane From Virgin Atlantic
Taikonauts Exercise In China's Tiangong Space Station
SpaceX's Starman Tesla Roadster In Space

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

Robotic Barber Programmed With a Number of Styles
'He found a barber shop which, he thought, would be good for an idle hour.'

Humanoid Boxing Robot KO's Opponent - It's A Knockout!
'Thirty rounds of fighting is tough work. Even for machines.'

Caterpillar Electric Mining Loader Not Yet Ready For Moon
'...the excavations were already in progress, for he saw gray slopes of rubble.'

Centipede Robots Down On The Farm
'...the walking mills of Puffy Products began to tread delicately on their centipede legs across the wheat fields of Kansas.'

Anthropic's Claude AI Creates Legal Citation From Whole Cloth
'Here is a Clerk that would work incessantly, and neither eat, sleep, want payment, or grumble.'

Students Vie For Lunar Regolith Mining Robot Prize
'About time you got here,' the astronaut said.

'They Erased My Memory' Says Ariana Grande
'...using a neutralizing electronic impulse.'

Solitary Black Hole Wanders In Space
'...the Hole is something like a vortex or a whirlpool?'

Spaceplane From Virgin Atlantic
'ZARNAK, YOU'RE TO COMMAND A SCOUTING EXPEDITION --- FIND OUT WHAT THIS IS ALL ABOUT!'

DARPA Wants 'Large Bio-Mechanical Space Structures'
'These are your rudimentary seed packages... Some will combine in place to form more complicated structures.'

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.