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Acknowledgem ents:
Every effort has been made to trace the copyright holders and we
apologise in advance for any unintentional omissions. We would be
pleased to insert the appropriate acknowledgement in any subsequent
edition of this publication.
We are grateful to the following for permission to
reproduce photographs:
Getty Images: p. 2 (Hulton Archive);
Science M useum /Science and Society Picture Library:
pp. 21, 25,27, 40, 49 (Bletchley Park Trust), 56;
TR H Pictures: p. 34.
For a complete list of the titles available in the Penguin Readers series please write to your local
Pearson Longman office or to: Penguin Readers Marketing Department, Pearson Education,
Edinburgh Gate, Harlow, Essex CM 20 2JE, England.
Contents
Introduction
page
V
Chapter 1 Printing
1
Chapter 2 Mathematics
6
Chapter 3 Navigation
11
Chapter 4 Guns
18
Chapter 5 Engines
25
Chapter 6 Flight
32
Chapter 7 Communication
39
Chapter 8 Computers
47
Chapter 9 Ideas
52
Activities
57
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