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"Science and science fiction, how do you even distinguish the two?"
- Jerry Pournelle
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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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Sound Nullifier-related
news articles:
- Noise-Cancelling Windows With Piezoelectric Patches
| Vipera Electric Skis From Frigid Dynamics |
| Pivotal Blackfly Electric Aircraft Lifts And Hovers |
| Tiny Flying Robot Weighs Just One Gram |
| Some Ringworld Configurations Are Stable |
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'ZARNAK, YOU'RE TO COMMAND A SCOUTING EXPEDITION --- FIND OUT WHAT THIS IS ALL ABOUT!'
'These are your rudimentary seed packages... Some will combine in place to form more complicated structures.'
'The crawling... object was V-Stephen's surgeon-hand...'
'Joe got out the gravity-simulator harnesses...'
'You couldn't have the capstone without the pyramid to hold it up.'
'the unobtrusive inspections with tiny remote-cast snoopers...'
I'm hoping that this procedure becomes a normal part of medical practice!
'... nothing was perfected until M. Pantalon announced the completion of his automatic valet.'
