A radium-lighted fish-bait is now on the market, and fishermen say that this bait is very successful in attracting fish which haunt deep water.
RADIUM MAKES GEMS BLUSH
D. Berthelot, F. Bordes, C. Doelter, and others observed that the rays from radium induced important changes in the colors of minerals.
Dr. T. Squance, of Sunderland, England, succeeded in transforming a sapphire of faint pink hue into a gorgeous ruby color, and a faint green sapphire into an oriental emerald hue. It was already known that a diamond exposed to the rays of radium glows with a beautiful green light.
In experiments carried out at the United States Bureau of Mines (1921), in Reno, Nevada, a colorless Colorado topaz was tinted yellow by exposure to penetrating radiation. If a method can be devised to make the color permanent, the discovery will greatly increase the value of the gem-stone material found in the west.
If we submit yellow phosphorous to the action of radioactive substances, it becomes changed into the red “alotropic” variety. Certain of the rays decompose ammonia, and water under their influence is subjected to electrolysis, yielding oxygen and hydrogen.
A RADIUM CLOCK
A very interesting instrument was devised by Sir William Strutt (now Lord Rayleigh) which has been called a “radium clock.” It consists of a glass vessel containing a tube of radium salts in the center, from which two gold leaves are hung. The inner surface of the containing vessel is coated with tinfoil, and this foil is grounded. The radium salts cause the leaves to become electrically charged. They then diverge, and, coming in contact with the grounded tinfoil coating, they are discharged, only to fall back again and repeat the process. This clock will operate as long as the supply of radioactive material will act, which in the case of pure radium would be nearly 2000 years.
G. Lentner has recently succeeded in utilizing atmospheric potential by the aid of radioactive substances, which, in some way not yet clearly understood, exert an influence upon the transformer. The method is as follows: A post about 12 m. in height, forming a sort of antenna, is erected; the post ends in a collector consisting of an aluminum sphere provided with points covered with radioactive substances. This collector communicates by a conducting wire with a special transformer. Under these conditions the earth and atmospheric currents attract each other through reciprocal induction.
Dr. S. A. Sochocky, the well known radium expert, has made radium oil paints, and made paintings with them. “Pictures painted with radium look like any other pictures in the daytime, but at night they illuminate themselves and create an interesting and weirdly artistic effect. This paint would be particularly adaptable for pictures of moonlight or winter scenes, and I have no doubt that some day a fine artist will make a name for himself and greatly interest us by painting pictures which will be unique, and particularly beautiful at night in a dark or semi-darkened room.”