United States or Estonia ? Vote for the TOP Country of the Week !


At any rate, I found that I could now charge the electroscope; which done, I placed it on the floor as before within the circle, and asked that the disc should be touched lightly. After a little time, there was the metallic scraping as before, and on examination the electroscope was found to be completely discharged."

"I took the electroscope to the table in the corner of the room and tried to recharge it, but found I was unable to do so even after repeated trials. In a minute or two some very light raps were given, and when I asked if the process was complete I received no raps in reply at all, which seemed to indicate to me that all the matter used for rapping had been returned to the medium.

I ought to have learned by this time not to take for granted that any of what we used to consider the laws of Nature are still in force." "The laws of Nature are all right," laughed the doctor. "But is it possible that Edith has not shown you the electroscope?" "What is that?" I asked.

In a rather high pitched voice it pointed out that: "If the Lunar Fort falls, the Earth " It stopped abruptly, and an electroscope beside Douglass took up the thread in a high, shrill voice, rather slurred, " will be directly attacked." "This," resumed the motor in a hoarse voice, "will certainly mean the end of humanity."

Imoda concluded as the result of his experiments that "the radiations of radium, the cathode radiations of the Crookes' tube, and mediumistic radiations are fundamentally the same." Some other very interesting facts have been observed by means of the electroscope. For example, Dr.

In the Memoirs of the Roman Academy of Sciences for 1857 he published a description of his new divided ring electrometer, which is based on the old electroscope of Bohnenberger and since then he has introduced a chain or series of beautiful and effective instruments, including the quadrant electrometer, which cover the entire field of electrostatic measurement.

While the doctor was adjusting the telephone and electroscope connections for our use, I expatiated to my companion upon the contrasts between the conditions of theater-going in the nineteenth and in the twentieth centuries contrasts which the happy denizens of the present world can scarcely, by any effort of imagination, appreciate.

The instrument available for radio-activity measurements is a modified type of the old gold-leaf electroscope. The measurement is made by the mutual repulsion of quartz fibres acting against a spring the extent of the repulsion is very clearly shown against a scale magnified by a telescope. The measurements to be made with instrument are various: The ionization of the air.

Everything must be registered. Will the medium be able to impress a photographic plate? Will she be able to illuminate a screen treated with platino-cyanide of barium? Will she be able to discharge a gold-leaf electroscope without touching it?" And so we travelled on the wings of imagination, always having before us the plummet of the strictest scientific methods."

This is the electroscope and telephone combined. We could have heard the examination just as well without the electroscope, but I thought you would be better entertained if you could both see and hear. Fine-looking young people, are they not? We shall see now whether they are as intelligent as they are handsome."