Popular Mechanics

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Popular Mechanics inspires, instructs and influences readers to help them master the modern world. Whether itís 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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Contents

Iron men of the lighthouse service
786
United States Lighthouse Service
Secrets of the polar sea
794
Fridtjof Nansen; 1861-1930, Arctic exploration
Lifting a river out of its bed
802
Chicago (Ill.) (City planning), Chicago River (Ill.)
Static speaker, new radio marvel
818
Loudspeakers
Using lamps as resistance units
826
Electric resistors, Radio equipment

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