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"The primary attraction [of writing sf] is the sheer pleasure of creating something from whole cloth."
- Dan Simmons
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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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'So, Ender, we will now begin your education.'
'What strange sensitivity! What an amazing development of science was manifested in every move and act and word of this Robot!'
'Forget the head atop it, the legs below, feet, arms, hands. It compels erasure.'
'That explains how it was so easy for me to remain motionless in midair or to perch on a flagpole in imitation of a giant bird, even in the windy city of Chicago.'
'The thirty-odd miles of The Factory’s circumference...'
'Wandering mines, you took them out on the edge of the desert, set them down and activated them.'
'Once in the very first weeks of the war, before everyone had been evacuated from the surface...'
'For a while your colonists will have to come up to the [orbital] Hospital...'
