Here are some significant events, in chronological order

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Here are some significant events, in chronological order. First, try to estimate the dates of items 5, 10, 13, 18, and 21. We are just asking for you to state when you think these events happened. Then, go to science/timeline.htm and fill the dates in on the timeline for all the events listed here.

1. First record of magnetic attraction. 2000 B.C.

2. First record of electrical attraction. 700 B.C.

3. Pythagorean Theorem. 530 B.C.

4. Leucippus and Democritus propose atoms. 370 B.C.

5. Aristotle Teaches. 335 B.C.

6. Ptolemy’s theory of planetary motion. 150 A.D.

7. Library at Alexandria burned. 415 A.D.

8. Rockets in China 1232

9. Gutenberg Bible 1455

10. Leonardo da Vinci 1510

11. Copernicus 1543

12. Tyco Brahe 1570

13. Galileo and his telescope 1609

14. Galileo in Rome 1616

15. Snell’s law of refraction 1621

16. Galileo denounced 1633

17. Pascal’s laws of pressure 1652

18. Newton’s Principia 1687

19. Newton’s Opticks 1704

20. Lavoisier and elements 1777

21. Volta creates the first battery 1800

22. Changing electric field creates magnetic field (Ampere) 1800

23. Magnetic field surrounds current (Oersted) 1820

24. Changing magnetic field makes electric field (Faraday and Henry) 1831

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