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

"Poised between intransigent scepticism and uncritical credulity, it [science fiction] is par excellence the literature of the open mind."
- John Brunner

Gravity Train  
  An underground railway system that utilizes gravity for acceleration.  

This same idea is a major plot 'device' in the 2012 version of the Total Recall movie.

They joined the line for the gravity train to Archimedes. The four of them boarded, the car was sealed, and Lilo's weight dropped away as the car fell down the inclined tunnel for almost four hundred kilometers. Somewhere under the Appenines the tunnel begain to slope up again, gradually slowing their speed to a crawl as the car nosed into the elevator which took them up to inhabited levels.
From The Ophiuchi Hotline, by John Varley.
Published by Quantum Science Fiction in 1977
Additional resources -

This idea was also used in Hugo Gernsback's 1911 novel Ralph 124c 41 + - see the entry for Sub-Atlantic Tube.

And what is the best shape or curve for this tunnel to follow? See the discussion in the article for gravity-assisted subway from Larry Niven's 1976 story A World Out of Time.

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

Additional resources:
  More Ideas and Technology from The Ophiuchi Hotline
  More Ideas and Technology by John Varley
  Tech news articles related to The Ophiuchi Hotline
  Tech news articles related to works by John Varley

Articles related to Transportation
AutoX Sets Up Asia's Largest Robotaxi Center
Einride Remote Operator Controls Multiple Vehicles
Hardt Hyperloop Fast Transit In A Can
Drone Swarm Lifts Truck - Not!

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 Invention Timeline, or see what's New.

 

 

 

 

More News

TytoCare Offers Futuristic Home Care
'Immediately an enormous apparatus fell on to her out of the ceiling...'

Powdered Regolith Propulsion
'... filling their great tanks with the finely divided dust which the ionic rockets would spit out in electrified jets.'

Ford's SafeCap, Opposite Of Niven and Barnes' Napcap
'In the napcap a client became an instant yoga master...'

Would You Get 'Chipped'? Michigan May Ban Employers
'Employees above a certain level were implanted with advanced microprocessors...'

Tesla Autopilot: What Does An Autonomous Car See When It Looks At The Road?
'Jeremiah is a sports-model to begin with and that kind is awfully hot-tempered.'

DNA Controls Swarms Of Molecular Robots
'They exist in loose swarms...'

Tether Asteroids To Save Us All
'If anything can glue the asteroids back into the planet they once were, magnology will do it.'

Blaux Your Personal Commuter Cooling Unit
A cooling unit had to be strapped to every commuter's back, by law.

3D Printed Damascus Steel Now Possible
'...lined with durite, that strange close-packed laboratory product.'

R9X Hellfire Missile With Long Blades Kills Queda Leader
'He was still roaring when the knife missile flicked past him...'

More SF in the News

More Beyond Technovelgy

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

Copyright© Technovelgy LLC; all rights reserved.