Project Gutenberg 2013-11-15 Public domain in the USA. 335 Baker, Ray Stannard 1870 1946 Boys' Second Book of Inventions Produced by Chris Curnow and the Online Distributed Proofreading Team at http://www.pgdp.net (This file was produced from images generously made available by The Internet Archive) "Boys' Second Book of Inventions" by Ray Stannard Baker is a non-fiction work written in the early 20th century." The book explores a variety of groundbreaking inventions and scientific discoveries, appealing particularly to a young audience curious about innovations and the marvels of science and technology. Topics covered include the wonders and dangers of radium, advancements in aviation with steerable balloons, and the invention of devices that measure earthquakes, illustrating how ordinary people can achieve extraordinary feats through invention and experimentation. "The beginning of the book introduces the miraculous properties of radium, a substance discovered by scientists Pierre and Marie Curie." This chapter highlights radium's extraordinary ability to emit heat and light without losing mass, emphasizing its potential applications and the dangers it poses due to its radioactive nature. It describes the fascination surrounding its discovery, including its glowing properties in darkness and its medical uses. Overall, the opening serves as a thrilling invitation into the world of scientific inquiry and invention, setting the stage for the innovations that will be discussed in the subsequent chapters. (This is an automatically generated summary.) file:///public/vhost/g/gutenberg/html/files/44188/44188-h/images/cover.jpg Reading ease score: 65.3 (8th & 9th grade). Neither easy nor difficult to read. en Technology -- Juvenile literature Inventions T Text Category: Children & Young Adult Reading Category: Science - Physics Category: Science - Chemistry/Biochemistry Category: Engineering & Technology 320089 2025-07-17T16:38:47.796766 text/html 295794 2024-10-23T19:46:01 text/html 2204169 2025-07-17T16:38:52.959747 application/epub+zip 2206871 2025-07-17T16:38:49.007730 application/epub+zip 154309 2025-07-17T16:38:48.428759 application/epub+zip 2284410 2025-07-17T16:38:55.945782 application/x-mobipocket-ebook 2255836 2025-07-17T16:38:52.321741 application/x-mobipocket-ebook 213540 2022-09-20T07:20:58.116268 application/x-mobipocket-ebook 269140 2023-09-19T09:13:02.533845 text/plain 249321 2024-10-23T19:46:01 text/plain; charset=us-ascii 17141 2025-07-17T16:38:56.078715 application/rdf+xml 12173 2025-07-17T16:38:48.512759 image/jpeg 2515 2025-07-17T16:38:48.470743 image/jpeg 2694333 2025-07-17T16:38:47.989768 application/octet-stream application/zip Archives containing the RDF files for *all* our books can be downloaded at https://book.klll.cc/wiki/Gutenberg:Feeds#The_Complete_Project_Gutenberg_Catalog en.wikipedia More titles under Grayson, David