Timeline of Microscope Technology. Middle Ages - Castle Battles? - Source of glass? - Uses for...

Timeline of Microscope Technology

Middle Ages - Castle Battles? - Source of glass? - Uses for glass?

Timeline of microscope technology

Simple Microscope

The Physics of a Glass Lens

Compound Microscope

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 )

ZachariasHans

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.


Zacharias

1609 - Galileo Galilei develops an occhiolino or compound microscope with a convex and a concave lens.



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”.

1665 - Robert Hookepublishes his Micrographia, a collection of biological micrographs.


1665 - Robert Hooke - He also coins the word “cell” when he uses his microscope to see ____?____ in cork bark.


1665 - Robert Hooke - He also coins the word “cell” when he uses his microscope to see little rooms in cork bark.


1674 - Anton van Leeuwenhoek improves on a simple microscope for viewing biological specimens.




- Almost 500 scopes



- Almost 500 scopes- All were “simple”



- Almost 500 scopes- All were “simple”- Only 9 have survived



- Almost 500 scopes- All were “simple”- Only 9 have survived- Up to 480 X



- Almost 500 scopes- All were “simple”- Only 9 have survived- Up to 480 X- Made of silver, gold and copper



- 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



FirstToSeeSpermCells



First to see Bacteria and to describe“Wee beasties cavorting about” in aglass of drinking water.


Question...What earned him his place in the history books as the... “Father of Modern Microscopy”?




Answer... It was his is extensive collection of special stains that allowed him to see otherwise invisible, transparent, organelles.

1931 - Ernst Ruska (Germany) builds 1st Transmission Electron Microscope (TEM)



1937 - Manfred von Ardenne, (Germany) builds the 1st Scanning Electron Microscope (SEM).



1937 - Manfred von Ardenne, (Germany) builds the 1st Scanning Electron Microscope (SEM). 1981 - Gerd Binnig and Heinrich Rohrer develop the Scanning Tunneling Microscope (STM).


What ARE they?

Plant Pollen Grains

What scope took this photo?

Scanning Electron (SEM)

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

SEM photomicrograph of a ? .

How about this one?

A fruit fly eye !

SEM photomicrograph of ? .

Erythrocytes

What type of E. M.

is this?

Transmission E. M.

( TEM )

TEM photomicrograph of a ? .

Oops !!! I mean…

TEM photomicrograph of ? .

And this SEM is of ? .

Scanning Tunneling M. (STM)

STM photomicrograph of ? .

Gold Atoms 1 Layer Thick

Remember the Spider?

Sweet Dreams !!!

Timeline of Microscope Technology. Middle Ages - Castle Battles? - Source of glass? - Uses for...

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