英语科普读物PDF电子书下载

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1．Hot Metal 1

2．Sir Walter Raleigh 6

3．Electric Wire 10

4．Light 15

5．Flying 20

6．In a Balloon 24

7．The Nine Planets 29

8．Eclipses 34

9．Switches and Fuses 40

10．Magnets 45

11．Otto von Guericke and the Vacuum 50

12．Galileo 55

13．Pendulums 60

14．Earthquakes 66

15．Thomas Alva Edison 71

16．Some of the Gases 76

17．Some Arab Scientists 80

18．Drills and Derricks 85

19．Mineral Oil 91

20．The Soil 96

21．Irrigation 101

22．A Ship's Propeller 106

23．Faraday and his Generator 110

24．Voltage and Current 115

25．Sir Robert Watson W 120

26．The Use of Radar 125

27．Malaria 130

28．The Air Brake 136

29．The Atlantic Cable 141

30．Gravitation 146

Notes 152

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