Life In The Industrial Age

2. built a line of affordable cars called the model t
3. invented the telegraph in 1837
6. heating foods and liquids to high temperatures to kill bacteria
9. idea that certain elements release energy when they break down
10. developed the concept of natural selection
13. succeeded in flying a powered airplane in sustained flight
14. used previous discoveries to develop the wireless telegraph
17. revolutionized physics
18. developed the most usable and practical lightbulb
19. involved forcing air through molten metal to burn out carbon and other impurities that make metal brittle
20. discovered the connection between magnetism and electricity

1. a machine that sent messages instantly over wires
4. discovered polonium and radium
5. the growth in the proportion of people living in towns and cities
7. developed in reaction to romanticism
8. a literary and artistic development of the early 1800s
11. a drug that reduces pain and in large doses makes that patient unconscious
12. inventor of the telephone
15. a movement in which artists introduced a new way of looking at the world
16. showed the link between microbes and disease