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Updated: May 22, 2025
For example, one curious and very beautiful novelty brought to his notice by the development of this vision would be the existence of other and entirely different colours beyond the limits of the ordinarily visible spectrum, the ultra-red and ultra-violet rays which science has discovered by other means being plainly perceptible to astral sight.
But the ultra-violet microscope reveals moving trillions of far smaller bodies, and these rush on geometric lines and cutout angles with the most incredible speed, specific for each kind and type." What were the angles? Eugene asked himself. Who made them? Who or what arranged the geometric lines? The "Divine Mind" of Mrs. Eddy? Had this woman really found the truth?
Within two hours Friday, in the ranch's air-car, had retrieved the cached suit. Ban Wilson had manned and made ready his personal space-ship for the trip to the laboratory, and Eliot Leithgow had jotted down a few preliminary plans for the infra-red and ultra-violet instruments which Carse would need in order to see the invisible asteroid of Dr. Ku Sui.
The heaviside layer, as I have repeatedly proved, is a splendid conductor of ultra-violet. The rays falling on it are probably bent along the line of the covering layer so that they open up and bend around the ship in the same manner as flowing water will open up and flow around a stone and then come together again.
Eight forms of electric lamps using infusible earthy oxides and brought to high incandescence in vacuo by high potential current of several thousand volts; same character as impingement of X-rays on object in bulb. A loud-speaking telephone with quartz cylinder and beam of ultra-violet light. Four forms of arc light with special carbons. A thermostatic motor.
Indeed, the last-named observer recognised nearly all the eighteen lines measured by him in the Nova as characteristic of planetary nebulæ. Of particular interest is the emergence in the star-spectrum photographed by Von Gothard of an ultra-violet line originally discovered at Tulse Hill in the Orion nebula, which is also very strong in the Lyra annular nebula.
Rowland's report of progress in spectrum work. The spectra of all known elements, with the exception of a few gaseous ones, or those too rare to be yet obtained, have been photographed in connection with the solar spectrum, from the extreme ultra-violet down to the D line, and eye observations have been made on many to the limit of the solar spectrum.
In this ultra-violet region lie the X-Rays, and the other recently discovered high degree rays; also the actinic rays which, while invisible to the eye, register on the photographic plate, sunburn one's face, blister one's nose, and even cause violent explosions in chemical substances exposed to them, as well as act upon the green leaves of plants, causing the chemical transformation of carbonic acid and water into sugar and starches.
He is equally surrounded by the astral and mental and other worlds which are interpenetrating his own denser world, but of them he is normally unconscious, because his senses cannot respond to the oscillations of their matter, just as our physical eyes cannot see by the vibrations of ultra-violet light, although scientific experiments show that they exist, and there are other consciousnesses with differently-formed organs who can see by them.
Then, while Crane and the women scrambled up off the floor and hurried to the visiplates, Seaton cut in rays six, two-seven, and five-eight. Ray six, "the softener," was a band of frequencies extending from violet far up into the ultra-violet.
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