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

"I can remember when the first pulsars were discovered. I was able to go and sit down and listen to graduate students talking about what their theories, to explain what pulsars really were."
- Vernor Vinge

Half-Sphere Force Field  
  A protective force field that can manifest even as a half-sphere.  

Anybody can make a spherical force field, but I enjoyed this brief excursion into solid geometry from Heinlein.

There flickered into being over the bench, hanging in the air unsupported, a silvery ball some two feet across... it made Don think of a Christmas tree ornament.

...Conrad bent over the controls. "Act two," he announced. "We now cancel out half of the locus..." Another shape took being, a perfect half-sphere otherwise like the last.

From Between Planets, by Robert Heinlein.
Published by Charles Scribner's Sons in 1951
Additional resources -

It is invulnerable to harm, and ordinary processes (like a burning cigarette) inside the sphere are uninterrupted. And how does it work?

"...There is no popular way to explain it. If you were willing to spend five hard years with me, working up through the math, I could probably bring you up to the same level of ignorance and confusion that I enjoy. Some of the tensor equations involved are, to put it mildly, unique..."

Comment/Join this discussion ( 1 ) | RSS/XML | Blog This |

Additional resources:
  More Ideas and Technology from Between Planets
  More Ideas and Technology by Robert Heinlein
  Tech news articles related to Between Planets
  Tech news articles related to works by Robert Heinlein

Half-Sphere Force Field-related news articles:
  - Trophy Active Defense System Not Quite A Force Field

Articles related to Engineering
Project Soli Radar Gesture Chip Now FCC Approved
Implosion Fabrication Shrinks 3D Objects To Nanoscale
ODYSSEUS Solar-Powered Stratospheric Plane Flies Forever
Phil Nuyttnn's City Under The Sea

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

FLIR Black Hornet 3 Palm-sized Drone
These drones can provide situational awareness beyond visual line-of-sight capability.

Dockworkers Protest Driverless Trucks
'It resembled conventional human-operated transportation vehicles, but with one exception -- there was no driver's cabin.'

Flying Car Concept By Kash Sirinanda
'Each one consists of a hub with many tiny spokes... On the end is a squat foot, rubber tread on the bottom...'

Unfurl The Future! Huawei Mate X versus Galaxy Fold
'A paper thin polycarbon screen unfurled silently from the top of the unit and immediately grew rigid.'

Amazon Echo And Google Home Should Have Morality Software
'The Dwoskin Morality Rating-Computer could 'spot the slightest tendency to deviation' from the social norm...'

China Building Robot Wives
'Want a life-companion, a pleasant one?'

China Social Credit System Like State-Run Whuffie
'At least there was no mandatory Whuffie check on the monorail platform...'

Project Soli Radar Gesture Chip Now FCC Approved
'He waved his hand and the circuit switched abruptly.'

Stan, Robot Valet, Will Drag Your Car Away
'He activated the grapple tracks. '

Jibo Home Robot Says Goodbye, Is Killswitched
'It resembles an oyster....'

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.