Bird flight has always intrigued mankind. This book provides an up to date account of our existing knowledge on the subject, as well as offering new insights and challenging some established views.
Can quantum operations, recombinant shapes, and concealed distribution actually lead to fun? Sure they can! Just try these optical illusions, mechanical aptitude puzzles, maps and mazes. "Selections are interesting."
YA Puzzles and problems concerning poker chips, presidents, tennis balls, missing letters, ancient coins and other oddities are gathered here. Townsend has culled this assortment from the past 100 years of puzzle publications and cites Victorian writer Angelo Lewis, better known as Professor Hoffman, as the best and most prolific source. Each puzzle is presented on a single page and illustrated with an appropriate and often humorous black-and-white drawing. Answers are included at the back. There is mental entertainment, magic, math, and more in this collection of classic tricks and problems.
Erwin Brecher and Mike Gerrard's compilation makes it fun to think about how the world really works. Simple observations of everyday life yield puzzles dealing with light, sound, evaporation, evolution, and the entire range of physical mechanics. Included are puzzles based on humorous applications of scientific theories--or are they pseudoscientific theories? You figure it out. For example, how much damage could the Chinese really inflict on the U.S. with a shock wave created by having the entire population jump off chairs simultaneously? Some problems are easy but some solutions are surprisingly counterintuitive. You'll have to be quite the physicist to ace this.
