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

Radio robot of the airways: automatic frequency changer
497
Airplanes (Radio equipment), Radio standards
Pilot in heated suit climbs to new altitude record
506
Aviation records, Aviation (Altitude flying)
Fins to stop ship's rolling governed by gyro
509
Ships (Stability and stabilizers)
Can you better your luck?
514
Gambling, Luck
Milk bottles of cellulose discarded when empty
519
Milk containers
Latest movie magic
586
Motion picture photography
Finding buried gold with the aid of magnets
591
PROSPECTINGElectric methods
Three selective crystal receivers
600
Radio receivers
Power supply for the a.c. short-wave receiver
602
Radio receivers (Energy usage)
Radio or record controlled from any room
603
Radio receivers (Control)

Docking an air liner by radio
521
Airplanes (Landing), Radio in aviation
Death Valley Scotty's castle in the desert
526
Death Valley Scotty SCOTT, Houses (California)
Mountaineer boy who went places
532
Melvin Alvah Traylor
Racing seagoing hotels
538
Steamships and steamboats
Plane for air or water has promenade deck
543
Airplanes (Design)
Perfect street car sought by jolting rider
546
Trolleys
Riddle of Mars
548
Mars (Planet)
Ultraviolet rays test art to aid restoration
554
Art (Expertising), Ultraviolet rays
Invisible light rays guard treasures and art
556
Burglar alarms, Photoelectric cells
What to look for in buying a boat
563
Motor boats
Can we change the weather?
570
Weather control
Martin Johnsons' flying expedition to Africa to visit forbidden area
574
Martin Elmer Johnson (American explorer and documentary filmmaker.); 1884-1937, Africa (Discovery and exploration)
Back to Babylon: story of permanent concrete
579
Concrete
City moved to make room for a gold mine
582
South Dakota LEAD, Gold mines and mining

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