Popular Mechanics

Etukansi
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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Sisältö

First rocket mail
641
Air mail service, Rockets
Sound ghosts haunt high-speed flyers
650
Aerodynamics, Airplanes (Speed)
U.S. fleet to be second to none
657
United States Navy
Vast new fields opened for rubber
674
RUBBER latex
U.S. army prepares for war on criminals
678
United States Army, Crime and criminals
Indian medicine men still practice magic among Canadian tribes
726
Indians of North America (Canada), Medicine men
Human and plant life chemically related
730
Biochemistry, Life (Biology)
Dog school secrets
732
Dogs (Training)
Condenser microphone operates on a.c
741
Microphones
Two-way five-meter phone
742
Radiotelephone

Is the age of steel passing?
680
Steel alloys
Artist's sketch of the mammoth Cunard liner 534
690
Ocean liners
Secret of camping comfort is in equipment
694
Camping (Equipment)
Electrical home .
698
Electricity in the home
Man-made coal mine shows how fuel to run a nation is obtained
702
Coal mines and mining
Radiophone fishermen
706
Fisheries, Radiotelephone
Why explore the antarctic?
714
Antarctic exploration
Rocks worth more than gold
722
Minerals, Precious stones

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