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Updated: June 8, 2025
J. H. Gladstone, was that they resulted from "interference" that is, a destruction of the motion producing in our eyes the sensation of light, by the superposition of two light-waves in such a manner that the crests of one exactly fill up the hollows of the other. This effect was supposed to be brought about by imperfections in the optical apparatus employed.
Lastly, in damp countries we have the larger but still invisible particles of vapour hanging about among the air-atoms. For they are very greedy of heat, and though the light-waves pass easily through them, they catch the heat-waves and use them to help themselves to expand.
So I believe that electricity and light have about the same kind of vibrations, or wave motion." "Now, then, if they do have and I admit it's up to me to prove it," went on Tom, earnestly "why can't I send light-waves over a wire, as well as electrical waves?" Mr. Swift was silent for a moment. Then he said, slowly: "Well, Tom, I never heard it argued just that way before.
With light-waves it was necessary to have a highly sensitive surface of the composition, capable of responding to many different vibrations, according to the light or shade of the object projected. This accounted for the success I met with upon adopting the coated wires, and I concluded thereupon that they were indispensable.
According to Bredichin, the straight tail must have been composed of hydrogen, and the other of some form of hydro-carbon whose atoms are heavier than those of hydrogen, and, consequently, when swept away by the storm of light-waves, followed a curvature depending upon the resultant of the forces operating upon them.
The outcome of it all is, that we now have experimental demonstration, as well as theoretical reason for believing, that the ether, once considered as only luminiferous, is concerned in all electric and magnetic phenomena, and that waves set up in it by electro-magnetic actions are capable of being reflected, refracted, polarized, and twisted, in the same way as ordinary light-waves can be, and that the laws of optics are applicable to both.
Among the particles of hydro-carbon, and perhaps solid carbon in the state of fine dust, which are thus set free there will be many whose size is within the critical limit which enables the light-waves from the sun to drive them away. Clouds of such particles, then, will stream off behind the advancing comet, producing the appearance of a tail.
Needless to say, I determined to cease my former experiments, and devote all my energy to ascertaining whether my apparatus was actually responding to Martian light-waves of remarkable integrity, and if such proved to be the case, to put every effort into improving the device with the hope of obtaining their import. I also determined to keep my discovery a secret, at least for the present.
After they had become perfectly dry, I stretched them on the frame as close together as I could without their coming into contact with one another. As light-waves are received in hundreds of different vibrations simultaneously, according to the light or shade of the object projected, I concluded that each wire should be capable of individual vibration.
Before I could recover from my surprise at this new evidence of Martian familiarity with the customs of Earth, the light suddenly grew dim and in a few seconds had disappeared completely, leaving the instrument plunged in darkness. Mars had risen above the frame of the skylight, and I was no longer in contact with the light-waves.
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