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Jan, 1948
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Mar, 1948
Planes Need No Wheels
How would they turn sideways? Wouldn’t it be impossible to do all the other stuff on the ground? Like, you know, get on the plane? Planes Need No Wheels Airplanes should keep their wheels on the ground, believes Samuel S. Knox, of Long Beach,. Calif. He has patented a landing strip formed of pneumatic-tired wheels, […]
New Guns for Human Bullets
By George B. Waltz, Jr. Drawings by Lester Fagans TAKING an all-out ride in the Navy's newest laboratory "gun" will be like sitting astride a standard aircraft rocket as it starts toward its target. This "gun" is a human centrifuge to end all centrifuges—a giant, high-speed merry-go-round capable of making a man feel like a bullet being shot from a rifle. Scientists will use the machine to learn a good many new facts about the physiological and psychological effects of high speeds and sudden changes in speed. They will do it by subjecting pilots to tremendous forces of acceleration and deceleration. As pilots and airplane manufacturers strive to bore deeper and deeper into the "no man's land" of supersonic and super-supersonic flight, new problems are arising. It is not now so much a question of whether the plane will hold together as: "Will the pilot?"
Don't Try to Crash This Gate!
Wall of security surrounds operation of Atomic Energy Commission. By Frank Carey Associated Press Science Writer ONE of the most beautiful nighttime sights in Washington is the U. S. Atomic Energy Commission's headquarters on Constitution Avenue. It's all lit up like a Hollywood theater—but for reasons of grim security, not display. This is protective lighting, designed to expose anyone who tries to break into the key building in the nation's atomic energy program. A strong-arm force of 100 guards, trained in judo tactics and marksmanship, and a network of electronic devices and physical barriers make the building a bastion of security. And as the building itself is guarded, so are the secrets inside—from formulas to scientists' doodlings.
How a Cash Register Works
CASH registers have come a long way since James Ritty built the first one in 1879. His invention was simply a register and nothing else—the keys moved hands on a clocklike dial to indicate the amount of a sale. Now the modern machines do practically everything but tie up the package. Some of the bigger models used in department stores have six cash drawers, a separate one for each of six clerks. Dials tell the manager how much each clerk has sold and how many sales he has made. Other dials keep track of payments made on credit accounts and petty cash paid out. The National Cash Register Co.'s model shown in the photographs, a standard one used in many kinds of businesses, has one cash drawer and dials that count sales and total amounts. It prints a sales record, gives a receipt, and stamps the sales slip.
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Juke Box Gets New Look
Juke Box Gets New Look A nickel in the slot will buy you one televised prize-fight round if the neighborhood tavern is hep to the latest thing in juke boxes. This is a chrome-and-mirror-bedecked coin phonograph, made by the Videograph Corp., of New York, with a 12-inch television screen added. You can choose your own […]
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How to Run An Atomic Power Plant
Nuclear research piles give preview of methods that may be used to make tomorrow's electricity. By Martin Mann You—as a citizen—own a part of the 2-1/2 billion-dollar atomic-energy industry. Although your individual share is only one in 143,000,000, it is probably the most important single thing you own. It provides the most powerful weapon in our arsenal for war, promises cures for many diseases, and will eventually furnish cheaper electricity and transportation. YOU'VE heard a lot about atomic energy. But you probably have a lot of questions because so few people have actually seen an atomic engine. Well, I have. I was one of a small group of reporters who saw two nuclear piles early this winter. While they were operating, I touched them, stood on top of one, saw it turned on and off, watched as "hot" radioactive materials were taken out of it. So maybe I can help you visualize the process and get rid of some of the mystery. Let's imagine you have just gotten a job running an "atom furnace." Sure I mean you! Some day such jobs will be as common as locomotive engineers. The engines of die future will be like the experimental piles I saw at the Argonne National Laboratory, which the University of Chicago runs for the U. S. Atomic Energy Commission, used to transfer heat out of power piles, but what that material will be is still a question. That's one reason nobody has built a real power pile yet. A good heat-transfer fluid will probably be found among the metals that melt easily—bismuth might be a possibility.
New Calculating Wizard
Let’s see 10,000 operations per minute, that works out to about 166.6 hertz. Not mega or kilo, just plain hertz. New Calculating Wizard EDSAC, a British cousin of our electronic mathematical brains, such as ENIAC and ED VAC (PS, May ’47, p. 95), will handle 10,000 multiplications a minute. Now under construction at England’s Cambridge […]