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
 |
Comments on 'Inaudibility Cloak' Is Theoretically Possible
Can you think of some good uses for a cloaking device that hides you, or an object, acoustically? (Read
the complete story)
| "how about sonar? doesn't sonar use soundwaves to detect the presence of an object? if that's the case...if the sound waves pass right through the object...wouldn't it be considered 'undetectable'?" (gid 1/11/2008 3:43:13 PM) |
| "It seems like it would work for submarines. American subs are coated with special sonar-absorbing rubberized black paint to make them more stealthy (I think this technology dates from the early 1980's), but this would be even better. I wonder if they will make a metamaterials paint?" (Bill Christensen 1/12/2008 11:35:37 AM) |
| "Didn't Frank Herbert's Dune have inaudibility chambers?
I vaguely remember, in the first book, where in the Emperor's court, a Harkonen and somebody else went there to make sure they weren't overheard?" (erdraug 1/13/2008 5:16:53 AM) |
| "That's right - he called it a cone of silence. It actually first appeared in a 1958 story by Frank Herbert - Cease Fire. I also have the Herbert quote you were thinking of in the cone of silence article." (Bill Christensen 1/13/2008 7:30:18 AM) |
| "The possible practical applications for this technology are endless! e.g. Subways, Trains, Crowded Elevators..." (S.B.D 1/15/2008 5:34:27 PM) |
| "From what I've read this cloak is not capable of keeping noise in (cone of silence) but rather bends noise around. Perhaps it is simply a matter of flipping a mathmatical switch to keep noise in, but a 5 foot thick concrete wall is probably cheaper and just as effective. Also nothing I've come across proclaims that these materials do anything extrordinary in blocking sound waves so wrapping your house in it would not stop you from waking up to the sound of your neighbor mowing the lawn at 7AM on a Saturday. This is really much more like an eliptical whispering wall." (Meditating Bear 1/17/2008 10:06:26 AM) |
| "That's what I was trying to get across - it bends sound waves around an obstacle." (Bill Christensen 1/17/2008 12:11:27 PM) |
| "Don't forget about the never-worked-as-advertised "cone of silence" from the 1960's TV series Get Smart" ( 1/17/2008 2:34:17 PM) |
| "You bet - see the comment with a link for cone of silence above." (Bill Christensen 1/17/2008 4:51:54 PM) |
Get more information on 'Inaudibility Cloak' Is Theoretically Possible
Leave a comment:
Tediously, spammers have returned; if you have a comment, send it to bill at this site (include the story name) and I'll post it.
More Articles
Brin's 1990 Novel Earth Still Full Of Predictions
'... making the point that their likenesses, every move they made, were being transmitted.'
'Whisper Mode' ala Blue Thunder Researched At Bristol
'Forest Lawn.'
Gaia - Why Stop With Just The Earth?
'But the stars are only atoms in larger space, and in that larger space the star-atoms could combine to form living matter, thinking matter, couldn't they?'
Microsoft VASA-1 Creates Personal Video From A Photo
'...to build up a video picture would require, say, ten million decisions every second. Mike, you're so fast I can't even think about it. But you aren't that fast.'
Splendid View Of Eclipse From Orbit Visualized And Repurposed By Arthur C. Clarke
'The area affected was five hundred kilometres across, and perfectly circular.'
Bespoke Environment Music From AIs
'Call 'em Winter Mute," said the other, making it two words.'
Goldene - A Two-Dimensional Sheet Of Gold One Atom Thick
'Hasan always pitched a Gauzy - a one-molecule-layer tent, opaque, feather-light, and very tough.'
SpaceX Wants A Moonbase Alpha
'And he had been sent with troops, supplies and bombs to command Russia's most trusted post, the Moonbase.'
Vast Apartment Living Will Get Even More Vast
'What is your population', I asked. 'About eighty millions.'
NASA Wants Self-Driving Or Remote-Controlled Vehicles For Lunar Astronauts
'THE autobus turned silently down the wide street of Hydropole. Robot-guided, insulated from noise and cold...'
Elon Musk Says Robotaxis Will Be Ready This August, 2024
'The car had no steering wheel, and no one drove!'
Moonwalkers AI-Controlled Electric Shoes
Now that's power walking that Hugo Gernsback would have approved.
Steve Jobs: 'Capture The Next Aristotle - With AI'
'It was disturbing to think of the Flatline as a construct...'
No Tips! Robotic Food Delivery In Phoenix
'...he rewired the delivery robot so that it would serve him midnight snacks.'
Electric Catamaran 'Explorer Eco 40m' Has 'Solar Skin'
'On went the electric-yacht faster and still faster.'
Orbital Mechanics, The Liftoff, The Turnover, The Retrograde Burn
'...the huge vessel had spun, with a sickening lurch, through a complete half-circle, the instant the power was reversed.'
Harvest Power From Tears And Blinking With Smart Contact Lens
'...he realized that it was not quite a clear lens. Speckles of colored brightness swirled and gathered in it.'
Europa Clipper Plate Carries A Special Message
'...a universal cryptogram — yet it is one which can be interpreted by any intelligent creature on any planet in the Solar System!'
Micro-Robots Are Smallest, Fully Functional
'With a whir, the Scarab shot from the concealing shadows of the corner where it had hidden itself.'
AI Enhances Images Your Brain Sees
'I could have sworn the psychomat showed pictures almost as sharp and detailed as reality itself'
