World War II/Technology from The Personal Navigator

Chicago, IL: Popular Mechanics Company, 1942. 17 x 24 cm. World War II issue.Cover picture shows submarine caught in steel net designed to snare its hydroplanes or other protuberances. ""Frozen Billions,"" using gamma rays to detect defects in a weld. Radium bromide. Radium sulfate, source of powerful gamma rays. Uncle Sam's Trump Card: American aeronautical engineering. ""Gun… Saber más sobre este artículo

New York, NY: Popular Science Publishing Co., Inc, 1941. 17 x 24 cm. "Can Air Defense Save America?"" is cover story. Cover shows two Grumman F4F-3 fighters, now in production for the U.S. Navy. World War II issue. Camouflage Trickery. ""Trial by Mud"" testing Army's trucks at Fort Holabird. P.T. Boats. Magazine, cover starting to loosen, 5 cm… Saber más sobre este artículo

Chicago, IL: Popular Mechanics Company, 1943. 17 x 24 cm. Cover story: ""Noiseless"" Sea Skimmer to Battle Submarines. Cover picture shows this skimmer, another of many, many wartime ideas that never paid off. ""Mummy"" Foods for Victory-- how dehydrated foods are used to feed the troops.Motorcycle ""Hybrid"" Tows Axis Guns in Africa. 12,000,000 Meals a Day. British idea… Saber más sobre este artículo

New York, NY: Popular Science Publishing Co., Inc, 1941. 17 x 24 cm. "What You Can Do to Defend America"" and ""New Dive Bomber"" are cover stories. Cover shows Navy's new Brewster SB2A1 Dive bombers. Man of the Month is Glenn L. Martin, pioneer plane builder. World War II issue. Army and Navy now training on… Saber más sobre este artículo