1000 Inventions and Discoveries.ROGER BRIDGMAN From the safety pin to superglue superglue Noun an extremely strong and quick-drying glue superglue n → cola de contacto, supercola superglue n , from the wheel to molecular motors, this book is a chronological chron·o·log·i·cal also chron·o·log·ic adj. 1. Arranged in order of time of occurrence. 2. Relating to or in accordance with chronology. guide to inventions that have had profound effects. Each entry tells who was responsible for the invention, its initial impact and long-term Long-term Three or more years. In the context of accounting, more than 1 year. long-term 1. Of or relating to a gain or loss in the value of a security that has been held over a specific length of time. Compare short-term. importance, and its use today. Slightly longer stories detail the advent of writing, the invention of gunpowder gunpowder, explosive mixture; its most common formula, called "black powder," is a combination of saltpeter, sulfur, and carbon in the form of charcoal. Historically, the relative amounts of the components have varied. , and Isaac Newton's mathematical description of gravity. Hundreds of images highlight the discoveries described. Overall, this book tracks the history of the world through the tools we use. Recommended for age 8 and up. DK, 2002, 256 p., color photos/illus., hardcover, $24.99. |
|
||||||||||||||||
Printer friendly
Cite/link
Email
Feedback
Reader Opinion