ix Contents Chapter 1 Technology and You—An Introduction. . . . . . . . . . . . . . . . . .2 Understanding Technology. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 How Science and Technology Are Related. . . . . . . . . . . . . . . . . . . . . . . 8 Technology: For Better or Worse? . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Disruptive Technologies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 A Brief History of Technology. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Chapter 2 Learning to Work Safely . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24 Hazards, Risks, and Risk Management . . . . . . . . . . . . . . . . . . . . . . . . 26 General Workshop Safety Rules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Additional Safety Rules for Hand Tools . . . . . . . . . . . . . . . . . . . . . . . . 30 Additional Safety Rules for Portable Electric Tools . . . . . . . . . . . . . . . . 30 Additional Safety Rules for Fixed Machines. . . . . . . . . . . . . . . . . . . . . 31 Good Housekeeping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Use of Color in the Workshop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Symbols and Signs Used in the Workshop . . . . . . . . . . . . . . . . . . . . . 33 Fire Safety Rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Hazardous Materials and Hazardous Waste. . . . . . . . . . . . . . . . . . . . 34 Occupational Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36