
Illustrated by the author.
Language
en
Duration
~6 hours (401K characters)
Publisher of text edition
Project Gutenberg
Release date
2020-09-15
Rights
Public domain in the USA.

1889–1972
Best known for making science and technology feel approachable, this early 20th-century writer created practical books that invited young readers to build, experiment, and understand how things work. His work helped turn curiosity about radio, electricity, and invention into hands-on learning.
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