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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Sommario

Wings for crime hunters
801
Police radio, Helicopters in police work, San Diego County (Calif.)
Mother plane launches small ship in midair
805
AIRPLANES (Launching)
Newspapers that talk
807
Newspapers, Recording equipment
Don't pity the poor fish
809
Fish culture, Trout
Latest movie thrills
818
Motion pictures (Setting and scenery)
Nature photos in your own back yard
882
Animals (Photographs), Nature photography
Dress up your magic tricks
890
Magic
Compact push-button receivers
897
Radio receivers
Three-tube radio direction finder also serves as broadcast receiver
898
Direction finding equipment, Radio receivers
Simple fixed-condenser substitution tester
900
M. N. BEITMAN, Radio receivers (Testing)

Advance of Diesel
826
Diesel engines
Four-crankshaft air engine is fast without vibration
832
Airplane engines
Brute force loses out to engineering skill
834
Lumbering
Age of the aerial monsters
840
Airplanes
Electric plants offer power to everyone
850
Private electric plants, Electricity on the farm, Wind power
Science probes secrets of Stradivarius violin
853
Violin
American drivers against the world
866
Automobile racing, Automobiles, Racing
Skidding trailer helps to build safer tires
870
Automobile research
Riches from the air
872
Air, Ammonia, Nitrogen (Fixation)
Small craft radiophone calls shore or ships
878
Radiotelephone
Tagging of sardines solves migration puzzle
881
Fish tagging, Sardines

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