by WILLIAM J. HARRIS There's nothing like a puzzle to test one's mental alertness, and those presented here by Mr. Harris are certainly corkers. He also gives you some simple tricks which, though they only take a few minutes to learn, will convince your friends that you are a mathematical wizard of the first water. (P. S.— Answers are in the back of the book!)
by John L. Coontz Uncle Sam is the only nation to systematically train pilots for giant military dirigibles like Los Angeles and Akron. "WHAT on earth are those men doing?" exclaimed a visitor to the Lakehurst, N. J. naval air station, as he watched several groups of men manipulating as many balloons in an open field.
NEW counts of the number of stars that could be seen with perfect telescopes of unlimited power were announced recently by astronomers of Mount Wilson Observatory. The number of stars visible to an unaided human eye probably is not over 6000. But large telescopes, like the great 100-inch one at Mount Wilson, which is the largest in the world, show millions of stars even in a small part of the sky.
Newest Thing in Beach Umbrellas A BEACH umbrella which admits the sun’s healthful ultra-violet rays and turns back the chilly winds has made its appearance on the beach at Venice, California. The central portion of the umbrella, shown in the photo below, is made of a tough transparent substance such as is used in keeping [...]
THE possibility of transmitting signals to Mars by short waves has long been a moot question among scientists. Some say no, and some say yes, but the latest contribution to the dispute has been made by Dr. Alexanderson, world famous electrical wizard. Dr. Alexanderson's stand on the question is negative, for the reason, he claims, that there exists another electrical ceiling beyond the moon which impedes the signals sent out from the earth. He also believes that the signals may get "snarled" in a mysterious electrical medium of some sort, which holds the waves imprisoned for a fraction of a second before releasing them for a return to earth.
SALVO! Here is a two-handed indoor game which is on a par with checkers and chess, in that the most mentally alert player wins. The only requisites to play "Salvo" are two pencils and some scrap paper. Each player draws two fairly big squares (three by three inches or larger) and rules these off into 100 smaller squares, ten on a side. To designate the vertical and the horizontal rows of squares, the vertical rows are indicated with letters at the top from A to J, and the horizontal rows from 1 to 10 at the left side.
The new Melanomatron from Sealy Posturepedic. Healthful Sleep on Ultra-Violet Ray Bed YOU grow healthy while you slumber and arise in the morning fresh and full of vitamines, if you sleep away the night in a special bed which has recently been devised by scientists. What does the job of keeping the body of the [...]
Inflation Hits Toy Balloon Market IN SPITE of the depression toy balloons have continued to go up, but this can no doubt be laid to an inflation of the stock. This cat, 12-1/2 feet high, is one of the many inflated comic figure balloons built for the use of parades, department store displays, carnivals, or [...]
Advertising Invades Taxicabs ADVERTISING has now invaded the taxicab in the form of a panel which fits above the partition between driver’s seat and the passenger’s compartment. Thus located, the ad cards, which are fitted in separate divisions and separated from each other by means of wood partitions, cannot fail to get undivided attention during [...]
Rescuer Walks to Victim With New Life-Saving Device REDUCING danger and increasing speed of movement through the water arc the features of a new German life-saving device which permits the rescuer to walk to the drowning person. Giving the wearer the aspect of a winged mercury, the device consists of a waterproof suit with a [...]
NO MATTER how comfortable patients are made to feel, they will always approach a dentist's office with some trepidation. There is good reason for this, for once in a dentist's chair, you have to take what comes and you can't fight back. Taking account of the patient's deep-seated fear, dentists are now doing as much as possible to relieve the situation. Their latest efforts have resulted in the creation of a chair which has about every possible comfort for the victims.
When the cats takeover, remember, this is where it started. I, for one, welcome our new feline overlords. Fighting Rats With Special Cats AT a cat farm in Le Havre, France, scientists are attempting to breed new kinds of cats which will pursue and eat rats so eagerly that they can be used to help [...]
High-speed photography has come a long way. Check out this explanation and videos of a trillion fps camera. Movies of Combustion Process WITH a view to improving automobile engines, two German scientists have invented a camera which records on a film the procedure of combustion in auto and other motors under varying conditions. The fuel [...]
The assumption being that the men do… Household Engineer Degree THE modern housewife should learn electrical engineering to enjoy the full benefits of modern household devices like vacuum cleaners and electric refrigerators. Many millions of dollars expended on such devices are now wasted because housewives who use them do not know how to get the [...]
by Frank Personette WHAT is your patented invention, or aren't you one of the 25,000 hopeful inventors who are now trying to cash in on the 32,000 inventions which have recently been granted patents in the United States? Imagine 32,000 inventions, all of them patented, and all looking around, like a gold digger, for somebody to finance them. They range from hair curlers to flying machines, from mouse traps to combine threshers, from a pair of iceman's tongs to, of all things, perpetual motion.
Wouldn’t the eye dry out? Crutch for Paralyzed Eyelids An eyelid crutch for use in cases of a paralysis of the eyelids, leading to a complete or partial loss of sight, has been developed by Dr. John C. Neill of the Pennsylvania State College of Optometry. The crutch consists of a thin gold half wire [...]
Fruit Ripened by Ethylene Gas PERISHABLE fruits and vegetables shipped to the cities in an unripened condition may be treated by ethylene gas and ripened in 24 hours. The artificially-ripened fruit has a natural taste, while the gas is said to have no harmful effects on the eater.
by Calvin Frazer ON DECEMBER 28, 1929, the British steamship Talma was off the eastern shores of the Bay of Bengal, en route from Calcutta to the Far East. The weather was calm and clear. Toward seven in the evening an extraordinary display of luminosity was seen in the surrounding sea. "At first," says the captain's report, "what appeared like small globules of phosphorescence rising from below and breaking at the surface were observed. Later these assumed an appearance almost like flashes of lightning under the water, which rapidly formed into regular beams, curved as the curved spokes of a wheel might be, and of a width at the ship of about 30 feet.
Now comes the automatic kettle, which boils the water, makes the tea and automatically shuts off the current when tea is ready, thus relieving the housewife of the necessity of tending the pot. The current consumption is comparatively low. This combination dust pan and broom rack that attaches to the wall proves very practical and handy for housewives. Made of heavy metal, the device will last a lifetime.
Car Exhaust Operates Upholstery Cleaner BY THE use of a new auto upholstery cleaner the inside of your auto can be] kept as spick and span as your living room. This new invention known as the “Motor-Vac” cleaner resembles the standard household implement, having similar hose and nozzle, but power is taken from the motor [...]
Stockings Protect Golf Clubs A DISABLED ex-service man at the Soldiers and Sailors Home in Eastbourne, England, has created the latest in head coverings for golf clubs. They are knitted woolen stockings, with the customary tassel and are especially serviceable for warding off rust attacks. The covers are made by veterans of the home.
Store Robot Reduces Audit Labor, Costs A ROBOT that eliminates at one fell swoop all cash registers, sales, audits, inventories and much other office routine work is now being manufactured for use in large department stores. The robot, shown in operation in the photo above, consists of a number of units joined in series and [...]
Motorized 3-Wheel Milk Bike THE milkman now has a new vehicle at his disposal, a motorized milk wagon built on a three-wheeled motorbike, as illustrated in the accompanying photo. Milk is carried on the truck body built over the rear wheels, while the driver rides in front, behind the protective windshield. What makes the truck [...]
I wonder how they did this. It seems like it would require some sort of hardware database. Dialing Device Shows Stock Quotations on Indicator SITTING in their offices business men may now learn at any time the status of any stock in which they are interested simply by dialing a number corresponding to the number [...]
by Beverley Barnes Famous tricks of Indian magicians—the well-known rope trick, the mango tree stunt, the basket illusion, the ability of fakirs to withstand pain—are not so superhuman as they seem. Science has pulled aside the veil of mystery surrounding these apparently phenomenal performances, and proved most of them , to be accomplished by natural means.
A GUN sight for night firing, which may be attached to any revolver or pistol, has recently been patented and will soon be marketed by Ray Helm of Chicago, Ill. The device, which has been especially designed for night police duty, consists of six small powerful condensers, an electric bulb, a special reflector, and a switch to make contact with small batteries.
LOW prices for commodities stimulate the business of the food faker, permitting him to sell his adulterated and "doctored" foodstuffs at prices lower than the lowest that can possibly be asked for pure articles. However clever the faker may be, science can catch him and his spurious concoctions by very simple means; means so simple indeed that every householder may take advantage of them to protect the health and well-being of his family.
Given that the current consensus is that the universe is around 13.75 billion years old that was a pretty good guess. Although with the exception of the Big Rip, most scenarios for the ultimate fate of the universe give us trillions of years at a minimum. We’re Living in Exploded Universe THAT the universe can [...]
George Washington, whose two hundredth birthday anniversary America will celebrate this year, was not only the father of his country, he was also the father of a number of noteworthy inventions. George Washington's favorite pursuit was farming, and in this, as in his many other undertakings, he was always intent upon improving the methods and implements with which he worked.
by H.H. Dunn All of the money made in the movies does not go to the big stars and directors. Queer jobs in the studios support a small army of expert technicians. A LARGE and shiny car pulled onto the lot, and an active young man ran from it into the main building of the RKO Pathe Studio at Culver City. "'Big Shot' director?" I asked. "Best shot in Hollywood, also director," answered Bill Rice. "Gets paid every time he misses a star, and he has missed hundreds of them.
by BENNETT LINCOLN When the Society for the Prevention of Cruelty to Animals steps in to prevent the mistreatment of a papier mache elephant, the modeler of that elephant can consider himself an artist with a capital A. This article tells you of the world's most amazing studio, in which lifelike creatures, from spiders to prehistoric monsters which walk, eat, and breathe, are manufactured by skilled artists and mechanics.
An INVENTION which may foreshadow a new era in the plastic field of art has recently been developed by Alexander Archipenko, noted exponent of modernistic motif in sculpture and painting. The invention is literally a "moving painting," being somewhat similar to motion pictures in that it is capable of revealing on its faces many varied designs and paintings, constantly moving, and each one a perfect image.
News is the world's most perishable commodity. Presses of the great metropolitan newspapers run an endless race for priority, with increased circulation going to the paper which can split seconds in getting the latest news and pictures to the readers. 1. Here is the first step in speeding an out-of-town news story to the readers of a typical metropolitan newspaper. The photo above shows the ticker room which receives last-minute flashes and complete stories over leased wires. These are automatic typewriter machines which reproduce typographical messages.
BRITISH war officials have just announced the development of a new anti-aircraft searchlight of radical design which, instead of throwing the usual cone of light into the sky, projects a gigantic criss-cross pattern which looks something like a checkerboard on the clouds.
Turkey Crossed With Chicken to Get Tasty Meat Fowl WHAT would you call the strange fowl in the photo at the right—a turken or a chickey? Either would be correct, for The thing is a cross between a turkey and a chicken. With a view toward providing a new bird for table use, the Rev. [...]
New Fashions in Motor Cars IF THIS depression has clone nothing else for the country, it has at least given lis finer motor cars. Displays of the 1932 models at recent auto shows in all parts of the country have shown many improvements and innovations in the popular-priced cars, while the more expensive models have [...]
TELEVISION transmitted on a light beam, opening the way to a new era in the art of broadcasting, has been successfully demonstrated at Schenectady, N. Y. by Dr. E. F. W. Alexanderson, noted radio engineer. In the laboratory tests, instead of the electric impulses being fed into the radio transmitter as heretofore, they were modulated into high frequencies on a light beam from a high-intensity arc.
Movie Star Invents Automatic Fag Vender Like Camera ACTORS can do other things besides act. Lew Cody, for instance, blossomed out as a full-fledged inventor when he applied for a patent on an ingenious cigarette vender patterned after a movie camera. One turn of the handle on the camera and a cigarette is ejected from [...]
Dolls Dance to Radio Music FROM Germany comes the latest radio novelty. It is a platform upon which a group of dolls dance to the tune of music issuing from your radio receiver. The device is a mystery until you understand the dance platform is caused to vibrate by means of a small needle which [...]
TWELVE chickens, sitting austerely in a miniature jury box, nodded silently in agreement when asked whether the accused rooster was guilty. An ostrich opened its mouth as though carrying on a conversation with a white trader. A myna bird shouted, "Hello, how are you?" to a fisherman. A rooster dashed into a scene, stopped and crowed. A crow with split tongue talked with apparent intelligence for the sound camera.
THE speediest thing yet in the way of devices to facilitate mail delivery is an air torpedo which has recently been introduced in Germany. The invention of a Berlin engineer, Herr Richard Pfautz, the vehicle speeds from city to city on a special overhead trolley, which carries the current to power the two electric propeller motors situated at each end of the cylinder, as shown in the accompanying photo.
This article wasn’t about what I thought it was about. Day Dreams Cause “Man Failure” EVERYBODY must avoid day dreaming, but this is especially necessary for workmen in factories. There are four common kinds of day dreams which make workers careless and inattentive. The first is emotional day dreaming, like letting the mind dwell continually [...]
by Jay Earle Miller Now that chemists have discovered the last element, it remains for the research worker to find practical uses for substances which are at present mere laboratory curiosities. Somebody will make a fortune one of these days by finding ways of using gallium, germanium, tellurium, and many other "unpopular" elements. THE last missing thing that goes to make up our known world was detected recently. Almost simultaneously the next to the last of the ninety-two elements, which had been located last year, was isolated in the form of a metal, and isolation of the last may be expected shortly.