Wiley, 1991. — 256 p. — (Science for Every Kid Series). — ISBN10: 0471525057. — ISBN13: 978-0471525059. How do magnets work? What makes a curve ball curve? What keeps an airplane in the air? How can a pulley make you five times stronger? Now you can learn the answers to these and other questions about basic physics through 101 fun, safe, low-cost experiments and activities that...
Комментарии