Experiment with cryptography — the science of secret writing. Cipher and decipher codes: transposition and polyalphabetical ciphers, famous codes, typewriter and telephone codes, codes that use
Famed puzzle expert explains math behind a multitude of mystifying tricks: card tricks, stage "mind reading," coin and match tricks, counting out games, geometric dissections, etc. Probability, sets,
This newly updated edition of a well-known work explores a pair of modern science's most fundamental discoveries: the asymmetric DNA helix and the overthrow of parity (left-right symmetry) in particle
Ninety-threeriddles, mazes, illusions, tricky questions, word and picture puzzles, and other entertainments for youngsters. Hilarious drawings. Solutions.
Fair, witty appraisal of cranks, quacks, and quackeries of science and pseudoscience: hollow earth, Velikovsky, orgone energy, Dianetics, flying saucers, Bridey Murphy, food and medical fads, more. "
Excellent guide to dozens of mystifying acts of deception provides aspiring magicians with all the information they need to perform professional-quality tricks. Step-by-step instructions and nearly 20
One of the subject's clearest, most entertaining introductionsoffers lucid explanations of special and general theories of relativity, gravity, and spacetime, models of the universe, andm
Only an elementary knowledge of math is needed to enjoy this entertaining compilation of brain-teasers. It includes a mixture of old and new riddles covering a variety of mathematical topics: money,
