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Inventing for Boys
A. Frederick Collins
· How_To · 26 章
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目录
The Project Gutenberg eBook of Inventing for Boys
ILLUSTRATIONS
CHAPTER II WORKING IT OUT ON PAPER
CHAPTER IV HOW TO EXPERIMENT
CHAPTER V MAKING A MODEL
CHAPTER VII MAKING YOUR INVENTION PAY
CHAPTER IX PUTTING IT ON THE MARKET
CHAPTER XI WHAT SOME INVENTIONS HAVE PAID
APPENDIX K GEARS AND GEARINGS
OHM’S LAW
APPENDIX P NUMBER, DIAMETER, CAPACITY, WEIGHT, AND RESISTANCE OF PURE COPPER WIRE
INDEX
FOOTNOTES
THE FULL PROJECT GUTENBERG™ LICENSE
Chapter 15
Chapter 16
Chapter 17
Chapter 18
Chapter 19
Chapter 20
Chapter 21
Chapter 22
Chapter 23
Chapter 24
Chapter 25
Chapter 26