Vietnam or Thailand ? Vote for the TOP Country of the Week !
Updated: May 2, 2025
Prof. Nipher of the Washington university at St. Louis describes some optical illusions, easily tried and apparently very singular, as follows: 1. Fold a sheet of writing paper into a tube whose diameter is about three cm. Keeping both eyes open, look through the tube with one eye, and look at the hand with the other, the hand being placed close by the tube.
To this claim, if it be seriously entertained, the obvious reply is that thousands of persons, probably, had seen this spark before it was DISCOVERED by Mr. Edison; it had been seen by Professor Nipher, who supposed, and still supposes, it is the spark of the extra current; it has been seen by my friend, Prof.
Its spectrum was comparatively simple. Very few bright lines besides those of hydrogen and coronium, and apparently no dark ones, stood out from the prismatic background. "The marked structural features of the corona, as presented by the negatives" taken by Professors Nipher and Charroppin, were the filaments and the streamers. The filaments issued from polar calottes of 20° radius.
Word Of The Day
Others Looking