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Invention and innovation: An introduction
Invention and innovation: An introduction

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Figure 23
Figure 23 Originally developed for scientific research into the structure of molecules, the laser now has a huge range of applications. (a) Laser surgery to correct short-sightedness Source: Science Photo Library. (b) Laser heart surgery Source: Science Photo Library. (c) Industrial carbon dioxide laser cutting metal Source: Science Photo Library. (d) Bar-code reader at supermarket checkout Source: Science Photo Library. (e) A laser beam is creating a digital track of information on a master disc. The master disc is then used to mass-produce CDs. The information will be read off a CD in a domestic player by using a similar laser beam (Source: Science Photo Library)

 10.2 Scientific or technical curiosity