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Classic usage
Vocabulary level: Upper-intermediate · Flesch–Kincaid grade 9 · 1,692 sentences
Vocabulary level is estimated from word frequency, not an official CEFR classification.
Subjects: Electric apparatus and appliances · Electrical engineering — Juvenile literature
Words worth knowing: saline · compression · periodically · dilute · cylindrical · slot · electrify · ignite
WARNING: This book of one hundred years ago describes experiments which are too dangerous to attempt by either adults or children.
It is published for historical interest only.
THE "HOW-TO-DO-IT" BOOKS ELECTRICITY FOR BOYS THE "HOW-TO-DO-IT" BOOKS ELECTRICITY FOR BOYS A working guide, in the successive steps of electricity, described in simple terms WITH MANY ORIGINAL ILLUSTRATIONS By J. S. ZERBE, M.E.
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Classic usage
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