New Stockings Made Like Gloves GLOVE stockings are the latest novelty to enter the field of feminine style. As shown in the photo below, the stockings are shaped to fit over the toes and are designed particularly for use with sandals during the warm weather season. The idea emanates from Paris.
Ten Drugs to Avoid in Medicines THERE are ten drugs often contained in patent headache medicines which are so dangerous that every purchaser should look carefully for them on the label before buying or using the remedy. Three are opiates, including opium, morphine and heroin. All three may cause the drug habit and should only […]
SELENIUM, that wonderful metal that changes its electrical resistance upon exposure to light, has recently been used in a most revolutionary camera developed by Mr. K. Wilcke, German scientist. In the ordinary sense of the term, this experimenter uses no film, and entirely dispenses with the use of silver compounds.
Cops’ COLD FEET Heated by electricity CLOTHED in a new electrically heated uniform, recently developed by the General Electric Company, a policeman can stand at street intersections directing traffic all day long in the coldest weather and keep as warm as if he were inside. Several thin rubber strips about 1/2 inch wide and very […]
“Mechanical Brain” Works Out Mathematical Engineering Problems A DIFFERENTIAL analyzer, or “mechanical brain,” has been designed by Dr. Vannevar Bush, Dean of the School of Engineering of the Massachusetts School of Technology, which will relieve the engineer and scientist of the burden of making computations which are mechanical and repetitive. The photo on the right […]
RECORDS show that busy street intersections are the favorite spots in which traffic accidents occur. To eliminate these danger spots, J. G. Van Zandt, an engineer of Pittsburgh, Penn., has patented the idea of a safety-tower which practically eliminates the possibility of crossing collisions and at the same time returns a profit to the community.
Space above and below street level at intersections belongs to the city. Mr. Van Zandt's towers would be constructed at the intersection, as shown in the drawing below, and would contain stores, offices, and parking facilities which would return a handsome revenue to the builders.
A NEW wonder in photography that will take pictures of the innermost recesses of the human stomach has recently been developed by three doctors of the University of Vienna. This amazing device, shown on the right, takes eight pictures simultaneously.
The new camera is contained in a tube 1/2 inch in diameter and three inches long. The powerful light is operated by a battery with cables running down the throat to the filament, as shown in the drawing.
Machine Tells Your Brain Speed IS YOUR brain and nervous system clicking at top speed? Here’s a machine that will tell you in a hurry. On a revolving cylinder are 20 questions taken from standard intelligence tests. Each question has alternative answers, and during the moment the machine stops for each question you must answer […]
PLAY a moving picture from a phonograph record!
When Baird, the English television experimenter, suggested this system several years ago, he did not realize how soon it would be before his prophecy would come true.
Those who have listened to television programs know that the signals become audible in the form of a shrill whistle in the loudspeaker. This whistle carries the picture elements in the form of modulated sound.
This looks like a brilliant idea. Electric Bath Fights Disease SOME London hospitals are now equipped with the latest in scientific methods of combatting disease, the electro-therapeutic bath. The diseased patient sits comfortably, as the photo below shows, with his hands and feet in small tubs. The artificial fever is produced in the body by […]
THE traffic tangles caused by major football games has become a problem of great importance to those cities that have the larger stadiums within their bounds. For hours before and after the games the police are compelled to work at top speed to restore the normal movement of traffic, being called upon at times to handle some fifty thousand additional cars.
At the various traffic conventions held about the country this problem has received much attention but it was only recently that a plausible solution to the matter was offered.
FOR years builders of ocean liners have been refining the designs of their vessels until it seems that the ultimate speeds attainable by the conventional hulls have just about been reached.
Promise of ocean speeds approaching that of fast airplanes is held forth, however, by a modified hydroplane type of sea vessel designed by H. G. Allan of Glasgow, Scotland, and illustrated in the drawing below.
As shown, the unique craft is essentially a streamlined hull supported on steel hydrovanes. These hydrovanes, planes, or water wings, as they may be described, travel through the water, but virtually on the surface. Ordinary hydroplanes, which are designed to avoid wave-making resistance, attain remarkable speeds but are unseaworthy in rough water.
800-lb. Magnet Treats Eye Injury AN EYE magnet so powerful that it will pull a flatiron across a room has recently been installed in a Minneapolis, Minn., hospital to remove steel cinders from patients’ eyes. It is the largest eye magnet in the world and weighs over 800 pounds. One and one-half miles of copper […]
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SILENT guns sending their whistling messengers of death into the sky at speeds far beyond those now attained by powder-driven shells seem likely for the next war, using for propulsion magnetic fields so powerful that when they are short-circuited they produce miniature earthquakes.
Dr. Kapitza, F. R. S., working at the Cavendish laboratory of Cambridge University, England, in his attempts to disrupt the atom has produced magnetic fields so powerful that they "explode" the coils that produce them. This man has finally revealed the secret of the magnetic gun so long anticipated by ballistic experts. Dr. Kapitza accomplishes the electric firing of a shell by short-circuiting powerful dynamos for periods of one one-hundredth of a second.
Exerciser Develops All Muscles EVERY muscle in the body is brought into action when you start swinging on the exerciser shown below, which can be operated by one or two persons. The “gyro wheel”, as the device is called, is designed to revolve in all directions and is made entirely of metal. The direction and […]
A COUPLE of sardine and salmon cans, a few bits of brass and several pieces of wood are all the materials that are needed to assemble an experimental but very practical picture transmitter and receiver.
Two of each of the cans will be needed. The salmon cans should be of the small or half can size and the end that has been opened should be replaced by soldering in water tight, a new disc of tin.
by Lew Holt
Inventors working in the cause of law and order, inspired by a recent outbreak of outrageous kidnapings and other crimes, have perfected numerous devices which give the police a new advantage in the perpetual war on criminals. Crime weapons are fully discussed here.
COULD the immortal shade of Sherlock Holmes return to earth, he would find a new delight in using the latest weapons of science to wage war on criminals—criminals, incidentally, of such perverted genius and "big business" organization as to make the notorious Professor Moriarty of Holmes and Watson fame a decided back number.
Electrical Device Tests Nerves to Determine Character CRYSTAL gazing and fortune telling are being supplanted as means to determine inclinations and aptitudes of children by an electrical device which examines one’s character by testing the relative strength of your nerves. The strange mechanism is an electrical unit operated with two electrodes. One is held in […]
THE wheel is one of the oldest inventions of man and has been used for ages on all sorts of vehicles, but it has remained for an English inventor to build a complete vehicle out of one wheel.
As shown in the photo above, the "dynos-phere," as its inventor calls it, consists of a wide-rimmed latticed wheel with a power plant inside its circumference, where the driver sits. There is also room for a companion in the seat alongside him.
TATTOOING is one of the most ancient arts in the world. Even before man had learned to write—and centuries before he could print—he practiced the art of pricking various designs and symbols and pictures into the human skin.
Down through the ages men and women have tattooed themselves for a wide variety of reasons. Early tribes tattooed their faces to make themselves appear more ferocious and powerful in battle. Other tribes tattooed their whole bodies as a protection from the rays of the sun and from the eyes of their enemies. Then the custom sprang up of tattooing the various parts of the body for religious purposes, or to show membership in a certain family or clan, or to make themselves more attractive to the opposite sex, or as evidence that a youth had reached the marriageable age.
Theremin Cellos Win Music Public in “Electric Concert” THE electric cello, developed recently by Leon Theremin, has now been accepted by the music public as an instrument of high artistic merit. At a symphony concert of electric music given a short while ago at Carnegie Hall, New York City, the electric cello made a sensational […]
by WALTER A. RASCHICK
When the talkies came in, directors of animal pictures faced a new problem. Before the super-sensitive mike, vocal commands were impossible, so other means of giving "stars" their cues had to be devised. In this unusual article you are taken behind the scenes and shown how directors utilize ingenious mechanical gadgets to make animals perform with keen intelligence before the camera.
Mouth Harpist Goes to Extremes JUST because he “slides over” a lot of notes going from low “G” to high “C” gives Fred Leslie, London musician, the right to claim the title of world’s champion mouth harpist. His mammoth instrument measures 36 inches from tip to tip. He also plays the one-inch organ shown perched […]
800-lb. Magnet Treats Eye Injury AN EYE magnet so powerful that it will pull a flatiron across a room has recently been installed in a Minneapolis, Minn., hospital to remove steel cinders from patients’ eyes. It is the largest eye magnet in the world and weighs over 800 pounds. One and one-half miles of copper […]