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"I never saw why I had to give up science in order to write, or the other way around, so I didn't!"
- Gregory Benford
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| Gravity Beam | ||
| An conical attractive ray, it pulls ships to their doom. |
An interesting presentation of the idea of a tractor beam as seen in Space Hounds of IPC (1931) by 'Doc' Smith, also called an attractive ray as seen in Crashing Suns (1928) by Edmond Hamilton.
| Down through it, on the rocks of the Moon, in the foothills of the Apennines, the mechanism established there abruptly sprang into action.
 ('Wandl, the Invader' by Ray Cummings) It was a giant gravity-beam! Of infinitely greater power than any Wandl vessel could generate, it flung out its spreading, conical ray.* The beam had about a hundred-foot diameter at its base on the rocks. It passed upward through the circle of Wandl vessels, and its spread bathed all of Grantline’s ships at once! An attractive beam, so powerful that the vessels were helpless! Against all their efforts they were pinned and drawn downward. A slight velocity at first, but with a tremendous acceleration. Within an hour they were hurtling, coming together as they speeded down the narrowing cone of the beam. * This was the ultimate purpose of all the Wandl tactics — to manipulate Grantline into his present position. This gravity-beam, though far smaller, was comparable to the one used by the Wandl control station. A rock contact against a huge mass, i. e., Wandl, and here, the Moon, was necessary to give the ray its power. No ship could generate such a ray. Hence, the Wandlites chose this battleground, where they could establish themselves upon our deserted Moon. |
| Technovelgy from Wandl, The Invader,
by Ray Cummings. Published by Astounding Stories in 1932 Additional resources -
|
Compare to cosmiquakes from Things Pass By (1945) by Murray Leinster.
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'...the rocket’s landing-arms automatically unfolded.'
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'I went to the control room where the three other men were manipulating their mechanical men.'
'The low-slung monorail car, straddling its single track, bored through the shadows on a slowly rising course.'
'It was a smooth ovoid floating a few inches from the floor...'
'... he thrust in his charging arm to replenish his store of energy.'
'...the terrible Jovian gravity that made each movement an effort.'
