1. Timeline of Microscope Technology

2. Middle Ages - Castle Battles? - Source of glass? - Uses for glass? Timeline of microscope technology

3. Simple Microscope

4. The Physics of a Glass Lens

11. Compound Microscope

12. 1590 - Dutch spectacle-makers,Hans Janssen and his son Zacharias, were said, by later writers in the 1600’s, to have invented a compound microscope. Timeline of microscope technology ( From Wikipedia ) Zacharias Hans

13. 1590 - Dutch spectacle-makers,Hans Janssen and his son Zacharias, were said, by later writers in the 1600’s, to have invented a compound microscope. Timeline of microscope technology ( From Wikipedia ) Zacharias

14. 1609 - Galileo Galilei develops an occhiolino or compound microscope with a convex and a concave lens. Timeline of microscope technology ( From Wikipedia )

15. 1619 - Cornelius Drebbel (1572 - 1633) presents, in London, a compound microscope with two convex lenses. 1625 - Giovanni Faber of Bamberg (1574 - 1629) coins the word “microscope” by analogy with “telescope”.

16. 1665 - Robert Hooke publishes his Micrographia, a collection of biological micrographs. Timeline of microscope technology ( From Wikipedia )

17. 1665 - Robert Hooke - He also coins the word “cell” when he uses his microscope to see ____?____ in cork bark. Timeline of microscope technology ( From Wikipedia )

18. 1665 - Robert Hooke - He also coins the word “cell” when he uses his microscope to see little rooms in cork bark. Timeline of microscope technology ( From Wikipedia )

19. 1674 - Anton van Leeuwenhoek improves on a simple microscope for viewing biological specimens. Timeline of microscope technology ( From Wikipedia )

20. 1674 - Anton van Leeuwenhoek improves on a simple microscope for viewing biological specimens. Timeline of microscope technology ( From Wikipedia ) - Almost 500 scopes

21. 1674 - Anton van Leeuwenhoek improves on a simple microscope for viewing biological specimens. Timeline of microscope technology ( From Wikipedia ) - Almost 500 scopes - All were “simple”

22. 1674 - Anton van Leeuwenhoek improves on a simple microscope for viewing biological specimens. Timeline of microscope technology ( From Wikipedia ) - Almost 500 scopes - All were “simple” - Only 9 have survived

23. 1674 - Anton van Leeuwenhoek improves on a simple microscope for viewing biological specimens. Timeline of microscope technology ( From Wikipedia ) - Almost 500 scopes - All were “simple” - Only 9 have survived - Up to 480 X

24. 1674 - Anton van Leeuwenhoek improves on a simple microscope for viewing biological specimens. Timeline of microscope technology ( From Wikipedia ) - Almost 500 scopes - All were “simple” - Only 9 have survived - Up to 480 X - Made of silver, gold and copper

25. 1674 - Anton van Leeuwenhoek improves on a simple microscope for viewing biological specimens. Timeline of microscope technology ( From Wikipedia ) - Almost 500 scopes - All were “simple” - Only 9 have survived - Up to 480 X - Made of silver, gold and copper - Resolution: <1 / 1000 mm - Focal Length: <1 mm

27. 1674 - Anton van Leeuwenhoek improves on a simple microscope for viewing biological specimens. Timeline of microscope technology ( From Wikipedia ) First To See Sperm Cells

28. 1674 - Anton van Leeuwenhoek improves on a simple microscope for viewing biological specimens. Timeline of microscope technology ( From Wikipedia ) First to see Bacteria and to describe “Wee beasties cavorting about” in a glass of drinking water.

29. 1674 - Anton van Leeuwenhoek improves on a simple microscope for viewing biological specimens. Question... What earned him his place in the history books as the... “Father of Modern Microscopy”? Timeline of microscope technology ( From Wikipedia )

30. 1674 - Anton van Leeuwenhoek improves on a simple microscope for viewing biological specimens. Timeline of microscope technology ( From Wikipedia ) Answer... It was his is extensive collection of special stains that allowed him to see otherwise invisible, transparent, organelles.

31. 1931 - Ernst Ruska (Germany) builds 1st Transmission Electron Microscope (TEM) Timeline of microscope technology ( From Wikipedia )

32. 1931 - Ernst Ruska (Germany) builds 1st Transmission Electron Microscope (TEM) 1937 - Manfred von Ardenne, (Germany) builds the 1st Scanning Electron Microscope (SEM). Timeline of microscope technology ( From Wikipedia )

33. 1931 - Ernst Ruska (Germany) builds 1st Transmission Electron Microscope (TEM) 1937 - Manfred von Ardenne, (Germany) builds the 1st Scanning Electron Microscope (SEM). 1981 - Gerd Binnig and Heinrich Rohrer develop the Scanning Tunneling Microscope (STM). Timeline of microscope technology ( From Wikipedia )

34. What ARE they?

35. Plant Pollen Grains

36. What scope took this photo?

37. Scanning Electron (SEM)

38. “Sputter” prepped for a SEM photo - gold layer is one atom thick

39. SEM photomicrograph of a ?.

40. How about this one?

41. A fruit fly eye !

42. SEM photomicrograph of ?.

43. Erythrocytes

44. What type of E. M. is this?

45. Transmission E. M. ( TEM )

47. TEM photomicrograph of a ?.

48. Oops !!! I mean…

49. TEM photomicrograph of ?.

50. And this SEM is of ?.

51. Scanning Tunneling M. (STM)

52. STM photomicrograph of ?.

53. Gold Atoms 1 Layer Thick

54. Remember the Spider?

55. Sweet Dreams !!!