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He cursed both of them for having marooned him in this savage age, at the very beginning of atomic civilization, with all his printed and recorded knowledge destroyed. Oh, he could still gain mastery over these barbarians; he knew enough to fashion a crude blaster, or a heat-beam gun, or an atomic-electric conversion unit.
Quenching the light by the ray-filter at F, and placing the pile at P, the totally reflected heat-beam is immediately felt by the pile, and declared by the galvanometric deflection. Invisible Images formed by Radiant Heat. Perhaps no experiment proves more conclusively the substantial identity of light and radiant heat, than the formation of invisible heat-images.
There, shining like a star through the close curtain of green that veiled 'The Thimble, was the projecting end of a highly polished tube of steel. And even as I gazed a man's face peered out as though in the act of sighting Aram Balencourt! "Then I understood. The tube was the means of projecting some enormously powerful heat-beam whose nature must be akin to that of the so-called X-ray.
Once more I turn the spar, but now the needle falls to 0°, rising, however, again to 90° after a rotation of 360°. We know that in the case of light the extraordinary beam rotates round the ordinary one; and we have here been operating on the extraordinary heat-beam, which, as regards double refraction, behaves exactly like a beam of light. Magnetization of Heat.
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