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Discusses optical effects we see in the sky including sun pillars, sundogs, glories and mirages. Three of the seven chapters focus on ice crystal effects. Suitable for both layman and scientist.
We live in a world of optical marvels - from the commonplace but beautiful rainbow, to the rare and eerie superior mirage. But how many of us really understand how a rainbow is formed, why the setting sun is red and flattened, or even why the sky at night is not absolutely black? This beautiful and informative guide provides clear explanations to all naturally occurring optical phenomena seen with the naked eye, including shadows, halos, water optics, mirages and a host of other spectacles. Separating myth from reality, it outlines the basic principles involved, and supports them with many figures and references. A wealth of rare and spectacular photographs, many in full color, illustrate the phenomena throughout. In this new edition of the highly-acclaimed guide to seeing, photographing and understanding nature's optical delights, the authors have added over 50 new images and provided new material on experiments you can try yourself.
From rainbows, river meanders, and shadows to spider webs, honeycombs, and the markings on animal coats, the visible world is full of patterns that can be described mathematically. Examining such readily observable phenomena, this book introduces readers to the beauty of nature as revealed by mathematics and the beauty of mathematics as revealed in nature. Generously illustrated, written in an informal style, and replete with examples from everyday life, Mathematics in Nature is an excellent and undaunting introduction to the ideas and methods of mathematical modeling. It illustrates how mathematics can be used to formulate and solve puzzles observed in nature and to interpret the solutions. In the process, it teaches such topics as the art of estimation and the effects of scale, particularly what happens as things get bigger. Readers will develop an understanding of the symbiosis that exists between basic scientific principles and their mathematical expressions as well as a deeper appreciation for such natural phenomena as cloud formations, halos and glories, tree heights and leaf patterns, butterfly and moth wings, and even puddles and mud cracks. Developed out of a university course, this book makes an ideal supplemental text for courses in applied mathematics and mathematical modeling. It will also appeal to mathematics educators and enthusiasts at all levels, and is designed so that it can be dipped into at leisure.
All of science springs from the observation of nature. In this classic book, the late Professor Minnaert accompanies the reader on a tour of nature's light and color and reveals the myriad phenomena that may be observed outdoors with no more than a pair of eyes and an enquiring mind. From the intriguing shape of the dapples beneath a tree on a sunny day, via rainbows, mirages, and haloes, the colors of liquid, ice, and the sky, to the appearance of the sun, moon, planets, and stars - Minnaert describes and explains them all in a clear language accessible to laymen. This new English edition is supplemented by 80 plates, over half of them in color, taken by the acclaimed photographer Pekka Parviainen, illustrating many of the phenomena - ordinary and exotic - discussed in the book.
Explains such natural phenomena as rainbows, mirages, iridescent clouds, and halos for the scientist and the artist
Angel-in-training Ella helps an injured bunny in this third magical book of the whimsical new Angel Wings series! The first angel in Ella’s grade has earned her sapphire halo—and Ella’s friends aren’t far behind. But Ella still has several halo points to collect, and she doesn’t want to be the last to earn her sparkling halo. When a magical bunny with an injury is brought to the school, nasty angel Primrose jumps at the opportunity to care for it. But all Primrose really cares about is collecting more halo points than anyone else. It’s up to Ella to take responsibility for the bunny, a task that she doesn’t mind at all. Ella loves animals! But will she ever get enough halo points to earn a sapphire halo of her own?
Join guardian angel-in-training Ella Brown and her friends as they experience magical adventures up in the clouds with this glittering collectible boxed set that includes the first four Angel Wings books! This sparkling paperback collection of the first four Angel Wings books includes New Friends, Birthday Surprise, Secrets and Sapphires, and Rainbows and Halos. In New Friends, Ella sets off on an adventure to Rainbow’s End, a magical place and home to the Forgotten Flower. Will Ella’s flair for trouble prevent her from earning her wings? In Birthday Surprise, Ella tries to cheer up homesick Jess with a magical glitter bomb. But her plan backfires, and Ella ends up destroying a priceless statue at school instead. Will Ella’s surprise get her expelled from Angel Academy? In Secrets and Sapphires, an injured magical bunny shows up at school, and it's up to Ella to take responsibility for it. But could caring for the bunny give her the halo points she needs to join her friends in gaining a sapphire halo? And in Rainbows and Halos, it’s sports day at Angel Academy, but when the school’s water supply is blocked it looks like it might be canceled. Can Ella step in to save the day?