[理学]Color of water 水的颜色.ppt

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[理学]Color of water 水的颜色

Color of water 10海技2班 尹珏琛 Color names Various cultures divide the semantic field of colors differently from the English language usage and some do not distinguish between blue and green in the same way. An example is Welsh where glas can mean blue or green. 与英语语言使用的差异的是不同的文化把颜色划分成不同的词义场和有些不区分蓝色和绿色。比如威尔士,glas可能意味着蓝色或绿色。 * While relatively small quantities of water appear to be colorless, pure water has a slight blue tint that becomes a deeper blue as the thickness of the observed sample increases. The blue hue of water is an intrinsic property and is caused by selective absorption and scattering of white light. Impurities dissolved or suspended in water may give water different colored appearances. 虽然相对少量的水近似无色,但纯水是有一点轻微的蓝色的,当观察的水的厚度增加是,蓝色就会变得深一些。水的蓝色色度是它的一种本征性质,这是由于水选择性吸收和散射白色的光。杂质溶解或悬浮在水中可能使水表现出不同的颜色。 Contents 1 Intrinsic color 固有颜色 2 Color of lakes and oceans 湖泊和海洋的颜色 3 Color of glaciers 冰川的颜色 4 Color of water samples 水样的颜色 5 Water quality and color 水质和水色 6 Color names 颜色名称 7 References 引用 8 Further reading 延伸阅读 9 External links 外部链接 Intrinsic color For more details on this topic, see Electromagnetic absorption by water. The intrinsic natural color of liquid water may be demonstrated by looking at a white light source through a long pipe, filled with purified water, that is closed at both ends with a transparent window. The light turquoise blue color is caused by weak absorption in the red part of the visible spectrum. 关于这个主题的更多细节,请参阅水对电磁的吸收. 水的固有自然颜色可以通过观察白色光源穿过一根充满纯水,两端是透明的窗口密封的长管来展示。浅蓝色是由于对可见光谱中的红色的部分弱吸收造成的. For most substances, absorptions in the visible spectrum are usually attributed to excitations of electronic energy states. However, water is a simple 3-atom molecule, H2O, and all its electronic absorptions occur in the ultraviolet region of the electromagnetic spectrum and are therefore not responsible for the color of water in the visible region of the spectrum. 对大多数

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