Magic Tricks for the Amateur Chemist (Apr, 1936)

Providing a wide variety of ways to set your friends on fire.

Ad: Boeing Inertial Upper Stage (Sep, 1979)

What percentage of Scientific American readers could possibly be in the market for an Inertial Upper Stage? Frankly I would be worried if someone was planning to launch a satellite, stumbled across this ad and proclaimed “Aha! Now I know what to do about apogee injection!”


If you’ve been thinking about choosing the right upper stage to get your own spacecraft off the ground, you’re no doubt going through a little anxiety right now. What about reliability? How about performance? Who’s responsible? Costs? Accuracy? Things like that. We’d like to make a case for the Boeing Inertial Upper Stage — the only all-inclusive, worry-free, complete package available.


How Germanium and a Bit of Wire Changed the World

The nuts and bolts of modern electronics, transistors lie at the heart of our rockets, computers, radar, radio, TV, and a thousand other devices


The time: December, 1947. The place: Bell Telephone Laboratories at Murray Hill, N.J. The event: the invention of a new kind of electronic “valve” that can amplify signals—an invention so basic that it will virtually remold all science and technology.

Unlike the vacuum tube, it will not need a power-consuming hot filament, nor will it require a vacuum. Is it an impractical dream? Many skeptics think so.

After years of experimenting, Bell scientists, faced with repeated failures, have turned back to basic research.

UNRULY HAIR Stays Neatly Combed (May, 1938)

This shows how much hair styles have changed in the last 60 odd years. The “unruly hair” looks just like a modern haircut whereas the Glostora saturated model looks like he should be the evil rival in a Harry Potter movie.

UNRULY HAIR Stays Neatly Combed
Even Stubborn Hair Will Stay In Place
Costs But A Few Cents To Use — a bottle lasts for months

IS YOUR HAIR difficult to keep in place? Does it lack natural gloss and lustre? It is very easy to give it that rich, glossy and orderly appearance so essential to well-groomed boys.

Just rub a little Glostora through your hair once or twice a week — or after shampooing, and your hair will then stay, each day, just as you comb it.
Glostora gives hair that natural, rich, well-groomed effect, instead of leaving it stiff and artificial looking as waxy pastes and creams do.

Try it! A large bottle of Glostora costs but a trifle at any drug store.


New Electrical Devices from Europe (Jan, 1933)

New Electrical Devices from Europe

Electric Dancing Master
• ONE of Germany s popular radio announcers, Walter Carlos, has recently developed apparatus, illustrated at the right and below, for instruction in the newest steps. It is operated with a phonograph, carrying the latest dance music, synchronized with the mechanism, so that the feet of dancing couples, illuminated by concealed lamps (as the back view shows) traverse the small circle, executing movements which are to be followed by the learners. This may be watched from any point on the floor. Instructions to the dancers are given also by the phonograph.

Why Universities Need This Nuclear Research Reactor Now! (Mar, 1956)

Why Universities Need This Nuclear Research Reactor Now!


We have split the atom and made a bomb, but where we go from here depends largely on the strange structure in the photo and others like it. It is a nuclear research type reactor. Right now scientists have literally thousands of ideas for putting the atom to work in medicine, biology, chemistry, metallurgy. But they need this reactor to hatch the eggs—are handcuffed without it.

HERE’S WHAT WE’LL WEAR (in space) (Jan, 1956)

This looks like some kind of Geiger inspired S&M gear.


Designers are already working on the styles the well-dressed space man needs to survive.

By Lloyd Mallan

Author of Men, Rockets And Space Rats

IT MAY or may not be true that clothes make the man, but one thing is certain: when he starts traveling in outer space his life will depend on the clothes he wears. For the past decade a unique group of clothing stylists has been hard at work determining the cut and materials of future fashions in space dress. None of this group is a designer by profession. Among its varied members are biophysicists; physiologists, anthropologists, electronic scientists and doctors of medicine. But they have one thing in common: all are willing to risk their own necks to perfect equipment that will make it safe for other men to fly through the alien vacuum of space. Acting as their own guinea pigs, they are locked into altitude chambers, spun wildly on centrifuges, and closed up in insulated rooms. In the process, they discover whether or not their space fashions are practical. And in order to be absolutely certain they plunge needles into their veins and spines, under their skin and over their brains. Wires connected to the needles carry their slightest physical reaction.

But out of it all, in just ten years, have come the means to prevent the horrors that could happen in space to the unaccustomed human body. Aeromedical scientists at the Air Force’s Wright Air Development Center (who supplied photos on these pages) now know that man can fly beyond the atmosphere without his tissues exploding, brain hemorrhaging, blood cells dying or lungs collapsing.


Well, your boss thinks of you in terms of so much a week! You are worth this or that to him. How much you are worth depends upon—YOU! You decide the amount chiefly by your ability—by your training. Why not increase the amount by increasing your training? Thousands of men have done it by spare-time study of L C. S. Courses. You are invited to earn more money. Mail this coupon.


New Flying Battleship (Oct, 1927)

New Flying Battleship

Huge All-Metal Biplane, Tested for Uncle Sam, Carries Six Guns and four Tons of Deadly Bombs

NEW war terrors are forecast on this page in our artist’s conception of the new giant bomber, the Curtiss “Condor” swooping down to destroy an industrial center. From its three two-gun nests machine gunners pour streams of bullets at enemy planes attacking from any direction, while the man at the bomb controls manipulates them to drop the explosives through an opening in the fuselage. With 90-foot wing spread and two 600-horsepower motors, the plane, which is all metal, weighs, loaded and manned, over eight tons, including four tons of bombs. In recent tests for War Department and Air Service officials, the huge plane took off in 200 feet and made 100 miles an hour, flying and landing gracefully. It carries 640 gallons of gasoline and has a cruising radius of 800 miles

Same wires – many more voices (Oct, 1952)

Same wires – many more voices
Connecting new multi-voice system to open-wire lines, near Albany, Georgia. With new system, 150,000 miles of short open-wire telephone lines can be made to carry up to 16 simultaneous messages economically.

Much of your Long Distance telephone system works through cable but open-wire lines are still the most economical in many places. Thousands of these circuits are so short that little would be saved by using elaborate carrier telephone systems which are better suited for long-haul routes. But a new carrier system . . . the Type O designed especially for short hauls … is changing the picture. It is economical on lines as short as 15 miles. With Type O thousands of lines will carry as many as 16 conversations apiece.

Type O is a happy combination of many elements, some new, some used in new ways. As a result, terminal equipment takes up one-eighth as much space as before. Little service work is required on location; entire apparatus units can be removed and replaced as easily as vacuum tubes.

Moreover, the new carrier system saves copper by multiplying the usefulness of existing lines. For telephone users it means more service . . . while the cost stays low.

Improving telephone service for America provides careers for creative men in scientific and technical fields