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"The point sticks in your head: physics rules. Virtue does not triumph unless the physics allows it."
- Larry Niven
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| Sound Nullifier | ||
| A barrier to sound; the cancellation of sound waves. |
| “How is it,” asked the doctor, “that in here we can’t hear the loud speaker in the anteroom, although there is no door?” “You see those ornamental spear points round the arch.” Nash stretched out a finger. “Well, diagonally between them is drawn a sound nullifying barrier. In principle, it’s not unlike those used in broadcasting except that it acts at audio frequencies. Try the experiment of putting your head through.” Obediently the doctor stepped forward through the arch. Suddenly he stiffened, shouted to Nash over his shoulder and plunged into the anteroom. Nash, hearing nothing through the sound nullifier, dawdled after him. But once in view of the antechamber, he too quickened his step. |
| Technovelgy from Prima Donna 1980,
by Bernard Brown. Published by Amazing Stories in 1931 Additional resources -
|
Compare to the Fenton Silencer from Silence Please (1957) by Arthur C. Clarke and Robert Heinlein's hush corner in Double Star in 1956. Also, see the isolation barrage from Wandl, The Invader (1939) by Ray Cummings.
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Tech news articles related to Prima Donna 1980
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Sound Nullifier-related
news articles:
- Noise-Cancelling Windows With Piezoelectric Patches
| China Steals Strato Airship Design From Google App Engine |
| Biohybrid Jellyfish Explore The Ocean |
| 3D-Printed Exoskeleton Learns From Your Hand |
| Smartwatch Powered By Slime Mold |
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'...war-balloons, or, as it would be more correct to call them, navigable aerostats.'
'This robot is a creature... It is a manlike being. Therefore, like any other talking, thinking man, he is entitled to a court trial!'
'...small electric motors at the principal joints worked the prosthetic framework by means of steel cables...'
