Out of the Blue（ISBN=9780521809252） 下载 pdf 百度网盘 epub 免费 2025 电子版 mobi 在线

Why is the sky blue and why are sunsets red? When can I see a

rainbow? Why is the moon sometimes visible in daylight? In Out of

the Blue skywatcher John Naylor offers practical advice about where

and when you can expect to see natural phenomena, what you will see

and how to improve your chances of seeing it. Naylor takes in both

the night and the day sky, and deals only with what can be seen

with the naked eye. Drawing on science, history, literature and

mythology, and assuming only basic scientific knowledge, Out of the

Blue is for everyone who enjoys being outdoors and who feel curious

or puzzled about things optical and astronomical. John Naylor was

born in England, but spent his childhood in Peru. A graduate of

London University with a degree in philosophy, he teaches physics

at a secondary school in London.

Preface

Introduction

1  Daylight

　1.1 The colour of the daytime sky

　1.2 Why is the sky blue?

　1.3 Airlight

　1.4 Aerial perspective

　1.5 How far can you see?

　1.6 Polarised light

　1.7 Polarised light from the sky

　1.8 Polarised light due to reflections

　1.c2 Haidinger's brush

2  Shadows

　2.1 No light without shadow

　2.2 Solar shadows

　2.3 Shadows formed by point sources

　2.4 Mach bands

　2.5 Coloured shadows

　2.6 The heiligenschein

　2.7 Shadows on water

　2.8 Shadows formed by clouds

　2.9 Shadows under trees in leaf

3  Mirages

　3.1 Atmospheric refraction

　3.2 Inferior mirages

　3.3 Superior mirages

　3.4 Lake monsters

　3.5 Looming and unusual visual range

4  Sunset and sunrise

　4.1 Sunset

　4.2 Twilight

　4.3 Clouds at sunset

　……

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书籍介绍

Why is the sky blue and why are sunsets red? When can I see a rainbow? Why is the moon sometimes visible in daylight? In Out of the Blue skywatcher John Naylor offers practical advice about where and when you can expect to see natural phenomena, what you will see and how to improve your chances of seeing it. He takes in both the night and the day sky, and deals only with what can be seen with the naked eye. Drawing on science, history, literature and mythology, and written in a popular style that assumes only basic scientific know-how, Out of the Blue is for everyone who enjoys being outdoors and who feels curious or puzzled about things optical and astronomical.