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

"All fiction is propaganda, and the fiction we like is the propaganda we believe in, and the fiction we don't like is the propaganda we don't believe in."
- Samuel R. Delany

Sonomagnetic Fabric  
  Cloth that gathers sound energy.  

Magnetic fields can be produced by acoustic motions in electrically conducting media, like sea water. A sonomagnetic field can be induced in the ocean by submerged acoustic sources, which imparts a water mass oscillation in the ocean. Water particles crossing flux lines of the Earth's ambient magnetic field experience an induced electric field.

Whether or not this would work in the open air, with a fabric that would turn the resulting sonomagnetic fields into words you could hear, I don't know. Brin makes it work, though.

They were being scanned again, and it wasn't just someone's True-Vu this time, but real eavesdropping. "Some tokomak's got a big ear on us," Roland reported irritably.

...He looked around quickly, searching for the voyeur... Then he saw the geek - a codger this time - leaning against one of the slender stalks of a sunshade-photocell collector, looking directly at the three of them. And sure enough, amid the bushy gray curls spilling under his white sun hat, Remi saw a thin wire, leading from an earpiece to a vest made of some sonomagnetic fabric.

From Earth, by David Brin.
Published by Bantam in 1990
Additional resources -

See Sonomagnetic Field Characterization from Induced, Radial Current Waves for a bit more about sonomagnetic fields.

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

Additional resources:
  More Ideas and Technology from Earth
  More Ideas and Technology by David Brin
  Tech news articles related to Earth
  Tech news articles related to works by David Brin

Articles related to Surveillance
Largest Micro-Drone Swarm Release Successful
HyperFace Aims To Foil Facial Recognition
Woolim DPRK Surveillance Tablet And Doctorow's 'Schoolbook'
Your 'Odortype' Is Unique!

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

Cormorant Flying Car
'The cab came floating down out of the sky...'

ElliQ Robot To Help Israel's Grandmas And Grandpas
'The robant and the tiny old woman entered the control room slowly...'

EU Debates Kill Switches For Robots
'I have a mechanism which our autofac on Mars builds as an... emergency safety...'

Scotland Set To Implement Basic Income
'Earned by just being born.'

Sales Robots More Persistent Than Humans
'Robot-salesmen were everywhere, gesturing,,, shrilling...'

AI Identifies Suicidal Behavior With 93 Percent Accuracy
'...He padded into the living room, and seated himself by the suitcase; he opened it, clicked switches, and turned on Dr. Smile.'

Razer Project Valerie Laptop Unfurls
'A paper thin polycarbon screen unfurled silently...'

Dust Movement On The Moon, Saturn's Rings Solved
'...The dust normally on the surface picks up and keeps a charge.'

Largest Micro-Drone Swarm Release Successful
'... Programmed to hang in space in a hexagonal grid pattern.'

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.