1. Tides

3. GRAVITATION G  M  1/R 2

6. C BA Gravitational force EarthMoon

7. A little more reality Path of moon’s centre Path of earth’s centre Both the earth and the moon revolve around their common centre of gravity x Common centre of gravity

8. A little more reality x Common centre of gravity Path of earth’s centre 1 2 3 4

9. A little more reality x Common centre of gravity Path of earth’s centre 1 2 3 4

10. A little more reality

13. Daily advance of peak tide

15. Daily change of tide heights

17. Different tide cycles

19. Diurnal Tide

20. Different tide cycles Semidiurnal Tide

21. Different tide cycles Mixed Semidiurnal Tide

22. Different tide cycles

23. Coriolus forces

24. Coriolus forces and gyres

25. Amphidromic points

26. Amphidromic points - Animation

27. Amphidromic Points - Gulf of St. Lawrence

28. Tide Levels and Chart Datum MHWS - Mean High Water on the Spring tide MHWS - Mean High Water on the Neap tide MHWS - Mean Low Water on the Spring tide MHWS - Mean Low Water on the Neap tide MHWS MLWS MHWN MLWN MTL Spring Range Neap Range MTL - Mean Tide Level Chart Datum

29. Tidal Bore

30. Bay of Fundy Tides

33. Tides and Weather

36. Parlee Beach

37. Tides and Weather Saxby Gale - 1869