Sounding a loud alarm through a loudspeaker clamped to the handlebars of his bicycle, a masked rider wheeled through London streets recently, like a modern Paul Revere, to test the efficiency of a new method of warning the public against sudden aerial gas attacks in war time. Equipped with gas mask and respirator, the cyclist broadcast warnings through a microphone built into the mask and wired to the battery-operated loudspeaker.

The Radio that Was Shot from a Gun (Mar, 1948)

Coming_the Radio that Was Shot from a Gun

The tiny elements used in a great war invention are now ready to go to work in civilian transceivers.

By Harland Manchester

CARRYING a complete broadcasting station in the palm of his hand, a radio engineer walked out of his laboratory at the Bureau of Standards in Washington the other day, talking as he went down the stairs and out of the building. His voice came to us from a loudspeaker in the room he had left, as clearly as if he were still there. His transmitter, containing microphone, tubes, circuits, batteries, and aerial, was enclosed in a plastic box about the size of a pack of cigarettes.

THE STORY of RADAR (Sep, 1945)


The Army has lifted the veil of secrecy from its miraculous “seeing eye.”

ONLY at rare intervals during the war have we heard the word, radar, mentioned and then only in a hushed tone. We have known for quite a while, however, that our military has possessed a mysterious device which can reach out and “see” through clouds, fog and darkness, and that this same instrument has been a factor in Allied victories.

Rocket’s Flight Kept In Sight (Jan, 1948)

Rocket’s Flight Kept In Sight

Gun-mounted camera eye keeps movie record of V-2 missile as it speeds into space at 3,500 miles an hour.

By Martin Mann

POPEYE is a seeing machine. Popeye can see things yon can’t see. His big glass eye can follow a V-2 zooming 3,500 m.p.h, and tell you just what it does at the 100-mile peak of its flight. But even Popeye is no match for enemy guided missiles—he could not spot an attacking rocket soon enough to sound the alarm.

Soldiers in Camouflage Suits Blend with Trees or Snow (Feb, 1941)

Umm, no. Actually they don’t blend at all. What they really need is some of this amazing British camouflage.

Soldiers in Camouflage Suits Blend with Trees or Snow

Camouflage uniforms developed by United States army engineers blend snipers into trees, shrubbery or snow, making detection by the enemy difficult. Believed to offer greater concealment than designs used by European armies, some of the suits are worn like long coats and others like regular uniforms.

Super Advanced Torpedo Attack Simulator (Nov, 1946)

Who needs a flight simulator when you’ve got one of these? Wait. Is that a roomba prototype on the left?

Torpedo Attack With these toylike devices the Navy trains its torpedo bomber pilots to hit targets. The cockpit on wheels, the mobile mount for the model carrier and the cart on which the tiny torpedo rides are all driven by electric motors at speeds exactly proportional to their size and the size of the floor. The pilot on the trainer fires the torpedo; the carrier is controlled separately (note operator’s hand at left).

ATOM-BOMBER Carries 3 Jet Fighters (Mar, 1948)

ATOM-BOMBER Carries 3 Jet Fighters

Meet the B-36. Its wing span is twice the distance of the Wright Brothers’ first flight at Kittyhawk. It’s 3 times as lethal as the B-29 and can hop to any spot on earth.

THE U. S. Air Force has a “Sunday punch” ready to slug any enemy who tries to start World War III with another Pearl Harbor.

It’s a sleek super-dreadnaught of the skies, the Consolidated Vultee B-36 long range bomber—and it’s ready today to exploit to the fullest the awesome power of the atomic bomb. Carrying its own fighter protection in its belly, it will serve, in the event of war, as the “throwing arm” for the most destructive force in history.

Dummy Locomotive Fools Enemy Aviators (Dec, 1938)

Dummy Locomotive Fools Enemy Aviators

Thousands of dollars have been wasted by Japanese pilots attempting to bomb Chinese locomotives and airplanes on the ground. Many of the bombs destroyed nothing more valuable than wood and reed decoys fashioned like railroad engines and planes. One dummy locomotive, which closely resembled a real engine, was found recently at Kiukiang, ready to fool the enemy pilots.

Giant Bomb (Dec, 1950)

That certainly is a big bomb. Exactly what would you use to carry that? Especially in 1950.

Right, man is dwarfed beside Earthquake bomb which is 27 ft. high, weighs 42,000 pounds and could level many city blocks

Careful—Tojo Knows Trees Don’t Smoke! (Feb, 1943)

Careful—Tojo Knows Trees Don’t Smoke!

WEARING mottled green suits and head-nets, these snipers shown at left step out of character as part of the scenery for a quick smoke during Army maneuvers. Primarily designed for use in forest and jungle country, suits like these enable men to fade almost completely into any leafy background, move about in the shelter of invisibility; the head-nets are for holding twigs or leaves. Note how legs of soldier at left blend in with foliage.