
INTRODUCTION
LESSON ONE. MAGNETISM.
LESSON TWO. MAGNETIC INDUCTION.
LESSON THREE. PRIMARY CELLS. SECONDARY CELLS.
LESSON FOUR. ELECTRIC CURRENTS.
LESSON FIVE. ELECTROMAGNETISM.
LESSON SIX. DYNAMO ELECTRIC MACHINERY.
LESSON SEVEN. THE INDUCTION COIL.
LESSON EIGHT. THE PRINCIPLE OF THE TRANSFORMER.
LESSON NINE. THE LEYDEN JAR AND CONDENSER.
A concise, step‑by‑step guide introduces the essential physics behind wireless telegraphy, beginning with the fundamentals of magnetism. The first lessons walk listeners through natural and artificial magnets, poles, magnetic fields, and the way magnetic lines of force shape the operation of early radio equipment. By grounding the material in clear, observable experiments—like the classic iron‑filings demonstration—the book makes abstract concepts feel tangible.
Building on that foundation, the series moves into magnetic induction, tracing how Faraday’s discoveries translate into the generation and detection of radio waves. Each chapter is arranged as an independent lesson, avoiding repetition while keeping the material logically connected. Whether you’re an amateur hobbyist eager to understand the “why” behind your transmitter, or a seasoned operator seeking a refresher on the underlying theory, this approachable course offers a solid, self‑contained education in the art of wireless communication.
Language
en
Duration
~1 hours (111K characters)
Publisher of text edition
Project Gutenberg
Release date
2020-09-29
Rights
Public domain in the USA.
Subjects

1889–1972
Best known for turning radio, electricity, and mechanics into hands-on adventures, this early 20th-century writer helped generations of young readers learn by building things themselves. His books mixed clear instruction with the excitement of invention, making science feel approachable and fun.
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by Alfred Powell Morgan

by Alfred Powell Morgan

by Alfred Powell Morgan

by Alfred Powell Morgan

by Alfred Powell Morgan