Normally, you see only one rainbow, but sometimes you might find two, each a partial circle around a common point. Here is a third example this one is an excerpt from question 6.1, "Rainbows": If a person is caught outdoors during a lightning storm, what can the person do to reduce the danger? For example, should the person hide beneath a tree or stand in an open field? Should the person stand still, crouch, or run? Why can a person's hair stand up, and is that a sign of danger?. Here is another example this one is an excerpt from question 5.2, "Lightning: People, cows, and sheep": Note that this question is actually a series of closely related sub-questions. 4-12)? Why is there a dark cone between the wick and the yellow part of the flame? Why do some candles smoke why do some flicker? Why is soot from a flame black, and yet white vapor is emitted from a candle that has just been extinguished? How does a candle burn that is, how does it consume its fuel? Why is the light from a candle flame largely yellow, and why do blue regions usually form along the side of the flame (Fig. For example, here is question 4.78, "A Candle Flame": Typically, the questions posed by the book are about phenomena that many readers will have encountered but not thought through physically. From 1978 until 1990, Walker wrote The Amateur Scientist column in Scientific American magazine. He is also known for his work on the highly popular textbook of introductory physics, Fundamentals of Physics, which is currently in its 12th edition. Jearl Walker is a professor of physics at Cleveland State University. See External links at the bottom of this page. There is also a collection of YouTube videos by the author on the material. There is a website for the book which stores over 11,000 references, 2,000 links, new material, a detailed index, and other supplementary material. The book covers topics having to do with motion, fluids, sound, thermal processes, electricity and magnetism, optics, and vision. The questions are interspersed with 38 "short stories" about related material. The emphasis is strongly on phenomena that might be encountered in one's daily life. The Flying Circus of Physics by Jearl Walker (1975, published by John Wiley and Sons "with Answers" in 1977 2nd edition in 2007), is a book that poses (and answers) 740 questions concerned with everyday physics. The Flying Circus of Physics at Internet Archive
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