Popular Mechanics

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Popular Mechanics inspires, instructs and influences readers to help them master the modern world. Whether it’s practical DIY home-improvement tips, gadgets and digital technology, information on the newest cars or the latest breakthroughs in science -- PM is the ultimate guide to our high-tech lifestyle.
 

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Conteúdo

Artificial snowstorms to freeze fires
529
Carbon dioxide, Fire extinction
Deep-sea camera to reveal wonders of sunken fleets and cities
534
Underwater photography
How safe is an airplane?
535
Airplanes
Climbers suck oxygen through pipe to keep alive on Mt Everest
538
Mountaineering, Mount Everest (China and Nepal)
Eclipse proves sun's effect on radio reception
538
Solar eclipses, Radio interference, Radio reception
Science and sports records
610
Sports
Uncle Sam as a movie producer
618
Motion pictures in education
Ghost towns of the West
627
Rhyolite (Nev.)
Yosemite modeled in cardboard and clay
630
Ansel F. HALL, Topographic maps, Yosemite National Park (Calif.)
Racing light beams uphold Einstein's theory
634
Relativity (Physics), Light

Airplane with revolving wings flies vertically or level
541
Airplanes
Wireless sender for the unskilled needs no knowledge of code
541
Radio transmitters
Latest warships built to fight but not to run away
542
Warships (Great Britain)
Radio in the Canadian Rockies
547
Radio broadcasting (Canada)
Model farm saves miles of steps
553
Farms
Portable comforts make camps homelike
554
Automobiles (Camping equipment)
Author makes paper and prints own books
556
Dard Hunter; 1883-1966, Paper industry, Printing
New underground wonderland found in Virginia
562
Caves
Pigeon messengers of peace and war
564
Pigeons
Steel houses built in single day reduce cost of construction
570
Steel construction
Explorers to solve deep-sea mysteries
573
NEW YORK zoological societyBeebe expedition, 1925, Sargasso Sea
Theater of the stars teaches astronomy
576
Planetariums
Sleuth hounds of the sea
579
Hydrographic surveying
Radio report of sea-bomb blast to guide ships
586
Depth bombs, SIGNALS and signaling, Submarine
Salmon eggs as fish bait redeem waste roe of canneries
588
Bait, Salmon
Disabled war veterans turn pioneers
594
Clearing of land, SOLDIERS, DisabledRe-education
Radio shoots typed words through space
599
Radio telegraph in printing

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