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Updated: June 25, 2025
When Roentgen came forward with his discovery of the new "X"-ray in 1895, Edison was ready for it, and took up experimentation with it on a large scale; some of his work being recorded in an article in the Century Magazine of May, 1896, where a great deal of data may be found. Edison says with regard to this work: "When the X-ray came up, I made the first fluoroscope, using tungstate of calcium.
But the women who can see clear through a man, like a Roentgen ray, do not invite soft demonstration. They give passion a chill. Love demands a little illusion; it must be clothed in mystery. And although we find evidences that many youths stood in the hallways and sighed, the daughter of Necker never saw fit by a nod to bring them to her feet.
In other fields they do not show any reluctance in taking up the newer developments of method. Even the Roentgen ray apparatus has quickly won its way, and psychotherapy is less expensive. To be sure, the most important reason is probably one which is most honorable. The physicians do not like to touch a tool which has been misused so badly.
Of course every technique needs its period of preparation for the task, but it is now sufficiently demonstrated that hypnotism carried through in a scientific spirit will never have any injurious consequences. The morphine injection and the Roentgen rays are by far more dangerous.
There it lies a little, tawny, crystalline patch. There would hardly be a larger quantity together in one box anywhere in England. "There are several kinds of emanations from radium. Photographs similar to those produced by the Roentgen ray tube and induction coil can be got by means of the emanations from a small quantity of radium.
There is no previously known substance or agent, whether it be even light or electricity, that possesses such wonderfully penetrative powers."*5* What, then, is the nature of these radiations? Are they actually material particles hurled through the ether? Or are they like light and possibly the Roentgen rays simply undulations in the ether?
Studying the action of the salts of a rare and very heavy mineral called uranium Becquerel observed that their substances give off an invisible radiation which, like the Roentgen rays, traverse metals and other bodies opaque to light, as well as glass and other transparent substances. Like most of the great discoveries it was the result of accident.
How could the old, familiar phenomenon, light, interest any one when the new agent, galvanism, was in view? As well ask one to fix attention on a star while a meteorite blazes across the sky. Galvanism was so called precisely as the Roentgen ray was christened at a later day as a safe means of begging the question as to the nature of the phenomena involved.
We must get those books again. But the essential phase was to place the transparent object whose refractive index was to be lowered between two radiating centres of a sort of ethereal vibration, of which I will tell you more fully later. No, not those Roentgen vibrations I don't know that these others of mine have been described. Yet they are obvious enough.
Edison travelled was, of course, the flagship of the squadron, and I had the good fortune to be included among its inmates. Here, besides several leading men of science from our own country, were Lord Kelvin, Lord Rayleigh, Professor Roentgen, Dr. Moissan the man who first made artificial diamonds and several others whose fame had encircled the world.
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