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

"Looking back through history, I see no evidence for humanity making the best of things, and I think it's a pretty safe bet that's an on-going trend."
- Richard Morgan

Daisy Projector  
  Beam of energy penetrates the Heaviside layer to enable communication from planet to planet.  

The Heaviside layer is a layer of ionised gas occurring between 90km and 150 km above the ground — one of several layers in the Earth's ionosphere. It reflects medium-frequency radio waves.

Predicted by Oliver Heaviside (and Arthur Kennelly), its existence was essentially demonstrated by Marconi's transmission of radio waves beyond the horizon.

But would this layer prevent communications between the Earth and other planets? John Campbell wrote a story about men trapped on Ganymede with no way to communicate their whereabouts.

Stetson had made a queer set up that looked something like a daisy ten feet across. The golden center, however, was a flattened copper dome, made of heavy metal, and attached to a tremendously heavy copper lead about two feet long. It was almost as great in diameter as it was in length. The end of this massive copper block was approximately an inch from a second plate of two-inch copper. This spread out in a bowl three feet in diameter.

Around the two-foot length was a curiously designed coil of rather heavy copper wire, insulated from the block on insulite pins. At the gap between the heavy lead and the copper bowl three magnets were placed, one hundred and twenty degrees apart.

The petals of the daisy were made of thin metal plates, connected at rim and center, and insulated from the copper dome.

The beam started out. After a very long time a sudden flash snapped out, and the beam was a solid column of energy stretching out to infinity, flowing bluish in the atmosphere...

"Want to send a message to the home folks?"

From The Derelicts of Ganymede, by John W. Campbell.
Published by Wonder Stories in 1932
Additional resources -

The description may remind you of the stiletto beam from Earthlight (1955) by Arthur C. Clarke.

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

Additional resources:
  More Ideas and Technology from The Derelicts of Ganymede
  More Ideas and Technology by John W. Campbell
  Tech news articles related to The Derelicts of Ganymede
  Tech news articles related to works by John W. Campbell

Articles related to Communication
Mouth Haptics Invented By Frederik Pohl In 1965, CMU Now Has Prototype
True Crime Live Podcasting In Fiction
Zoom Adds Real-Time, Live Translation
Will The Super Bowl Go To Pay Per View?

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

Giving Snakes Their Legs Back
Then some unknown race had chanced upon the dreamers and decided to 'help them out.'

'Ring Nation' Show Predicted By William Gibson In 1999
'... you had your trademark Lucky Dragon Global Interactive Video Column outside.'

SolarXOne Solar-Powered Drone Flies (almost) Forever
'It's an Indian Air Force drone; its solar cells could power an entire farm.'

Video! Chess Robot Breaks Opponent's Finger In Match
'A robot may not injure a human being.'

Virtual Co-Embodyment - Two People Control One Virtual Body
'... we were supposed to be forming five unit composites first."

The Wanderer: Eyebot From Fallout, Eye From Zelazny
'We send our eyes on their appointed rounds, and they can hover or soar or back up...'

Experts Decry Planet-Scale Schemes To Limit Global Heating
'Light from the sun hit those little spheres and bounced.'

OrganEx Revives The Organs In Dead Pig
'Wakened into half-life activity one hour a month...'

NAVER Labs Haptic Device 2.0 Robot vs. IKEA
'... the two pairs of waldoes in the screen followed in exact, simultaneous parallelism.'

Spaceships Should Last So Long
'THE SPACE VESSEL was traveling swiftly… For over five thousand years they had Voyaged on and on.’

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.