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New Device Permits Patient To Administer Gas
A NEW device makes it possible for a patient to administer gas rather than having it done by the dentist. The patient takes the gas by working a small bulb held in the hand. Thus it is possible to take only as much as necessary for producing a state of analgesia.
Cream Whipped By Expanding Gas
AT THE push of a button, ordinary cream, subjected to a new process, can now be turned into whipping cream. The cream is first put up by the dairy in containers of automobile steel. Rendered air-tight by the elimination of oxygen, the container next receives an injection of nitrous oxide gas. As the housewife presses the button on the top of the small cask, the nitrous oxide expands, forcing out the cream under pressure and, through aeration, whips the product.
This is a Popular Science article from 1949 which teaches budding young chemists how to make nitrous oxide. It even helpfully explains that the gas produces “a feeling of exhilaration when inhaled”.
Other articles in this series include:
- The crystal which eliminates the need for sleep.
- The dust that lets you lift a car.
- The weed that makes you feed.
- The liquid that gives you control of time and space
The Gas That Makes You Laugh
Chemists call it nitrous oxide. You can generate this and other oxides of nitrogen in a home laboratory.
By Kenneth M. Swezey
AN ACHING tooth is never tunny, but i. the dentist who yanks it out may well first put you to sleep with a few whiffs of nitrous oxide, commonly known as “laughing gas.”
Personally, I think these wacky “turn signals” are just a fad.
AUTOMOBILE DRIVERS Flash Your Turns
New Model SIMPLEX DIRECTION SIGNAL KIT fits most ears. Gives new safety and comfort when making turns. Eliminates arm signals. Flashing parking and tail lights show other cars which way you’re going to turn. Flashes 60 to 80 times a minute. Works like factory installed models on expensive cars. Does not interfere with operation of present lights. Install it yourself. All parts furnished. For most 1942 to 1949 cars. SPECIFY MAKE AND YEAR. Adaptable to earlier cars at extra cost. MONEY BACK GUARANTEE.
DEALER INQUIRIES INVITED
Camera Gives Print in a Minute
NOW you can snap a picture and see it only a minute later. The camera that does this is an entirely new type. It’s the first production model of the Polaroid Land Camera (PS, May, ’47, p. 150). It costs less than $100.
The camera uses a special film that gives you eight pictures. Each one costs just a little more than you’d pay for drug-store processing of ordinary prints of this size.
Contained in the roll of positive paper are eight tiny capsules of jellied reagent. When you advance the film after snapping a picture, a capsule is opened as it passes between two rollers. The jelly simultaneously develops the negative and forms a print. You pull out the print after a 60-second wait. For extra prints, you make another exposure or copy the original.
One control sets both shutter speed and lens opening. Numbers from 1 to 8 in an opening above the lens show whether the camera’s set for bright sun or poor light conditions. The camera has flash contacts.
Camera Records “Eye Interest” of Reader for Items on Page
Researchers using an improved tool virtually look through the eyes of a reader to determine what interests him in advertising, art and reading material. Blinders or glasses cause him to move his head as he glances at different sections of a page. A small spotlight affixed to his head focuses a beam of light on a reproduction of the page just above the reading rack, in the identical area observed by the subject. A camera behind the subject, snapping at a constant speed of two frames per second, records the exact location, duration and sequence of every glance. The film is then read and analyzed. It shows time for each pause.
BBC Puts Inventors On TV
INVENTIONS ARE the stars of one of the most popular television shows in Britain.
The Television Inventors’ Club of the British Broadcasting Corporation has been on the air for seven years. During this time more than 7000 inventions have been submitted to the club, of which 580 have been shown on the air. A quarter of these have caught the eyes of manufacturers and many are already in production.
The inventions range from a simple shirt stud which allows for the shrinkage of the collar, to a compressible ship’s fender which eases a 24,000-ton vessel against a dock.
A number of British inventors have hit the jackpot through the program. One of them actually did it with a better mousetrap, and the world has already beaten a path to his door to the tune of over a million sales. Years of patient observation taught the inventor that a mouse twists its head when approaching the bait and nibbles from below. His trap therefore springs when the bait is liftedâ€”not pushed down. A tidy profit was also made by the inventor of a stair elevator for invalids. A moving step, carried on rails, is drawn up the staircase by a cable and winch. More than 500 inquiries poured into the BBC when this device was shown on TV.
A Cure For Crime in the Parks
Here is a modern solution to the problem that is plaguing every large city in America today!
By Robert Hertzberg
A COLLEGE professor walking his dog is knifed to death. The small daughter of a foreign diplomat is robbed of her bicycle. A woman pushing her baby in a carriage has her purse snatched.
Where do these crimes take placeâ€”in a lawless Suez port town, or in the very heart of America’s richest city? You only have to read the newspapers to know that murder and mugging are frequent occurrences in New York’s famed Central Park, an otherwise beautiful oasis of lakes, playgrounds and trees bounded on three sides by the world’s plushest apartment houses and on the other side by an incredibly overcrowded and festered slum.