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"I just can't be politic. I never learned how to do that and I don't like doing that. I think it's false."
- Harlan Ellison
 |
| Eavesdropping Ray | ||
| A device that allows others to hear from outside ordinary locked rooms. |
This is a very early reference to the concept of a device or technology that could penetrate a locked room to hear conversations within the room.
| Captain Carter added abruptly, "We're insulated here, Halsey?"
"Yes. Talk as freely as you like. An eavesdropping ray will never get through to us." "...Look here, lads, this is my chance to talk plainly to you. Outside, anywhere outside these walls, an eavesdropping ray may be upon us. You know that? One may never even dare to whisper since that accursed ray was developed." |
| Technovelgy from Brigands of the Moon,
by Ray Cummings. Published by Astounding Stories of Super Science in 1930 Additional resources -
|
Here's another quote from the story about using the device:
I threw the current into my apparatus. I prayed, if it met interference, that the slight sound would pass unnoticed. George Prince had said that he would make opportunity to disconnect the room's insulation. He had evidently done so. I picked up the interior sounds at once; my headphone vibrated with them. And with trembling fingers on the little dial between my knees as I crouched in the darkness behind the cylinder case, I synchronized.
Ray Cummings described eavesdropping rays this way in Voyage 13 (1938):
An eavesdropping ray! You can hear them sometimes, when you are close to a metal obstruction through which they are passing. An eavesdropping ray from some near-by point was focused upon Normah’s door. It was picking up the murmur of the three voices and humming a little with the door’s interference.
I set my tiny eavesdropper on the library floor beside me; connected its little battery; focused its projector. Was Miko's room insulated? I could not tell...
I realized the existence of a low hum — the tiny, microphonic, grinding hum of electronic interference.
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'That explains how it was so easy for me to remain motionless in midair...'
'We had discovered that metal was relatively impervious to the telepathic effect.'
'Detailed plans for the construction of the Gundstetter-Halone warp drive were flowing.'
'Do not waste your priceless company on the unappreciative folds of a sleep pod...'
'...so we've promised him a generous pension from the royalties.'
'Hocus-pocus religions and archaic weapons are no substitute for a good blaster at your side.'
