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Updated: June 5, 2025
Finally Roger asked, "What happened on Phobos?" "No one bothered to tell me," continued Astro, "that I had to protect myself from the ultraviolet rays of the sun, since Phobos didn't have an atmosphere. It was one of my first hops into space and I didn't know too much. I went outside and began working on the tube.
"But the madness that seized the multitude before the catastrophe what did you mean by saying that it was the ultraviolet rays?" "I used the term," Edmund replied slowly, "without attaching a very clear meaning to it. It simply expressed the general thought that was in my mind.
All the visible light is cut out, leaving only the ultraviolet rays, and these travel as fast and as far, and return by reflection, as though accompanied by the visible rays." "But how can you see it?" asked an officer. "How is the ship it is directed at made visible?" "By fluorescence," answered Metcalf. "The observer is the periscope itself.
The repeller ray generators, operating on this current, and in conjunction with "twin synchronizers" in the power broadcast plant, developed two rhythmically variable ether-ground circuits of opposite polarity. In the "X" circuit, the negative was grounded along an ultraviolet beam from the ship's repeller-ray generator.
He kept on lecturing her about gamma-rays and ultraviolet rays and X-rays and cosmic rays, trying to keep making some sort of intelligent sounds while they clung together and waited, and, with the other half of his mind, trying not to think of everything that could go wrong with that jerry-built improvisation they had just dumped onto Keegark.
"But ultraviolet photography does not affect the document tested in any way, and it has lately been used practically in detecting forgeries. I have photographed the last page of the will with its signatures, and here it is. What the eye itself can not see, the invisible light reveals."
Haswell was induced by his desire for gain to visit you and how you had most mysteriously predicted his blindness. Now, there is no such thing as telepathy, at least in this case. How then was I to explain it? What could cause such a catastrophe naturally? Why, only those rays invisible to the human eye, but which make this piece of willemite glow the ultraviolet rays."
The ultraviolet manifests through chemical effects, the infra-red through thermal effects. We have left them out of our considerations because these regions of the spectrum differ from the visible part not only quantitatively, as present-day science believes, but qualitatively also, and in a fundamental way.
And there is no time for that aboard a fast steamer running through the ice and the fog. No, it is mere theory, but I have an idea that the ultraviolet light the actinic rays beyond the violet end of the spectrum, you know will penetrate fog to a great distance, and in spite of its higher refractive power, which would distort and magnify an object, it is better than nothing."
Vitamin C can be put directly in the eye in a dilute solution with distilled water for infections and injuries, in the ear for ear infections, and in the nose for sinus infections. Applied directly on the skin C in solution makes a very effective substitute for sun screen. It doesn't filter out ultraviolet, it beefs up the skin to better deal with the insult.
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