13 Metals金属 1
13.1 History ofthe Use ofMetals使用金属的历史 4
13.2 How to Obtain Metals如何获取金属 11
13.3 Properties and Uses of Metals金属的性质与用途 18
13.4 Making Metals More Useful使金属用途更广泛 24
13.5 Environmental Problems Associated with the Disposal of Used Metals废金属处理引发的相关环境问题 30
Key to Test yourself单元测试答案 33
14 Materials of the Modern World当今世界的材料 37
14.1 Making Plastics from Crude Oil以原油为原料制造塑料 39
14.2 Environmental Problems Associated with the Disposal of Plastics 塑料处理引发的相关环境问题 54
14.3 Composite Materials复合材料 65
Key to Test yourself单元测试答案 71
15 Light,Colours and Beyond光、颜色及其他 75
15.1 How Do We See an Object？我们是如何看见物体的？ 77
15.2 Reflection at Plane Surfaces平面上的反射 80
15.3 Colour颜色 85
15.4 Beyond the Visible Spectrum在可见光谱之外 92
15.5 Beyond Infrared and Ultraviolet在红外线和紫外线之外 97
15.6 Refraction and Its Practical Uses折射及其实际应用 107
15.7 Optical Fibres and Total Internal Reflection光纤和全内反射 112
Key to Test yourself单元测试答案 118