the microscope - wordpress.com · anthony van leeuwenhoek 1632-1723 robert hooke 1635-1703 hooke...
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![Page 1: The Microscope - WordPress.com · Anthony van Leeuwenhoek 1632-1723 Robert Hooke 1635-1703 Hooke Microscope . The History Zacharias Jansen 1588-1631 The “First” Microscope. How](https://reader033.vdocuments.site/reader033/viewer/2022042810/5f9ac46d7eab0a32017dc707/html5/thumbnails/1.jpg)
The Microscope
![Page 2: The Microscope - WordPress.com · Anthony van Leeuwenhoek 1632-1723 Robert Hooke 1635-1703 Hooke Microscope . The History Zacharias Jansen 1588-1631 The “First” Microscope. How](https://reader033.vdocuments.site/reader033/viewer/2022042810/5f9ac46d7eab0a32017dc707/html5/thumbnails/2.jpg)
The History
• Many people experimented with making microscopes
• Was the microscope originally made by accident? (Most people were creating telescopes)
• The first microscope was 6 feet long!!!
• The Greeks & Romans used “lenses” to magnify objects over 1000 years ago.
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The History
• Hans and Zacharias Janssen of Holland
in the 1590’s created the “first”
compound microscope
• Anthony van Leeuwenhoek and Robert
Hooke made improvements by working
on the lenses
Anthony van Leeuwenhoek
1632-1723
Robert Hooke
1635-1703 Hooke Microscope
![Page 4: The Microscope - WordPress.com · Anthony van Leeuwenhoek 1632-1723 Robert Hooke 1635-1703 Hooke Microscope . The History Zacharias Jansen 1588-1631 The “First” Microscope. How](https://reader033.vdocuments.site/reader033/viewer/2022042810/5f9ac46d7eab0a32017dc707/html5/thumbnails/4.jpg)
The History
Zacharias Jansen
1588-1631
The “First” Microscope
![Page 5: The Microscope - WordPress.com · Anthony van Leeuwenhoek 1632-1723 Robert Hooke 1635-1703 Hooke Microscope . The History Zacharias Jansen 1588-1631 The “First” Microscope. How](https://reader033.vdocuments.site/reader033/viewer/2022042810/5f9ac46d7eab0a32017dc707/html5/thumbnails/5.jpg)
How a Microscope Works
Convex Lenses are
curved glass used to
make microscopes (and glasses etc.)
Convex Lenses bend
light and focus it in
one spot.
![Page 6: The Microscope - WordPress.com · Anthony van Leeuwenhoek 1632-1723 Robert Hooke 1635-1703 Hooke Microscope . The History Zacharias Jansen 1588-1631 The “First” Microscope. How](https://reader033.vdocuments.site/reader033/viewer/2022042810/5f9ac46d7eab0a32017dc707/html5/thumbnails/6.jpg)
How a Microscope Works
Ocular Lens (Magnifies Image)
Objective Lens
(Gathers Light,
Magnifies
And Focuses Image Inside Body Tube) Body Tube
(Image Focuses)
•Bending Light: The objective (bottom) convex lens magnifies and focuses (bends) the image inside the body tube and the ocular convex (top) lens of a microscope magnifies it (again).
![Page 7: The Microscope - WordPress.com · Anthony van Leeuwenhoek 1632-1723 Robert Hooke 1635-1703 Hooke Microscope . The History Zacharias Jansen 1588-1631 The “First” Microscope. How](https://reader033.vdocuments.site/reader033/viewer/2022042810/5f9ac46d7eab0a32017dc707/html5/thumbnails/7.jpg)
The Parts of a Microscope
![Page 8: The Microscope - WordPress.com · Anthony van Leeuwenhoek 1632-1723 Robert Hooke 1635-1703 Hooke Microscope . The History Zacharias Jansen 1588-1631 The “First” Microscope. How](https://reader033.vdocuments.site/reader033/viewer/2022042810/5f9ac46d7eab0a32017dc707/html5/thumbnails/8.jpg)
Body Tube
Nose Piece
Objective
Lenses
Stage
Clips
Diaphragm
Light Source
Ocular Lens
Arm
Stage
Coarse Adj.
Fine Adjustment
Base
Skip to Magnification Section
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Body Tube
• The body tube holds the objective
lenses and the ocular lens at the proper
distance
Diagram
![Page 10: The Microscope - WordPress.com · Anthony van Leeuwenhoek 1632-1723 Robert Hooke 1635-1703 Hooke Microscope . The History Zacharias Jansen 1588-1631 The “First” Microscope. How](https://reader033.vdocuments.site/reader033/viewer/2022042810/5f9ac46d7eab0a32017dc707/html5/thumbnails/10.jpg)
Nose Piece
• The Nose Piece holds the objective
lenses and can be turned to increase
the magnification
Diagram
![Page 11: The Microscope - WordPress.com · Anthony van Leeuwenhoek 1632-1723 Robert Hooke 1635-1703 Hooke Microscope . The History Zacharias Jansen 1588-1631 The “First” Microscope. How](https://reader033.vdocuments.site/reader033/viewer/2022042810/5f9ac46d7eab0a32017dc707/html5/thumbnails/11.jpg)
Objective Lenses
• The Objective Lenses increase magnification (usually from 10x to 40x)
Diagram
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Diaphragm
• The Diaphragm controls the amount of
light on the slide/specimen
Turn to let more light in or to
make dimmer.
Diagram
![Page 14: The Microscope - WordPress.com · Anthony van Leeuwenhoek 1632-1723 Robert Hooke 1635-1703 Hooke Microscope . The History Zacharias Jansen 1588-1631 The “First” Microscope. How](https://reader033.vdocuments.site/reader033/viewer/2022042810/5f9ac46d7eab0a32017dc707/html5/thumbnails/14.jpg)
Light Source
• Projects light upwards through the
diaphragm, the specimen and the
lenses
• Some have lights, others have mirrors
where you must move the mirror to
reflect light
Diagram
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Arm
• Used to support the microscope when
carried. Holds the body tube, nose
piece and objective lenses
Diagram
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Coarse Adjustment Knob
• Moves the stage up and down (quickly)
for focusing your image
Diagram
![Page 21: The Microscope - WordPress.com · Anthony van Leeuwenhoek 1632-1723 Robert Hooke 1635-1703 Hooke Microscope . The History Zacharias Jansen 1588-1631 The “First” Microscope. How](https://reader033.vdocuments.site/reader033/viewer/2022042810/5f9ac46d7eab0a32017dc707/html5/thumbnails/21.jpg)
Magnification
![Page 22: The Microscope - WordPress.com · Anthony van Leeuwenhoek 1632-1723 Robert Hooke 1635-1703 Hooke Microscope . The History Zacharias Jansen 1588-1631 The “First” Microscope. How](https://reader033.vdocuments.site/reader033/viewer/2022042810/5f9ac46d7eab0a32017dc707/html5/thumbnails/22.jpg)
Magnification
• To determine your magnification…you
just multiply the ocular lens by the
objective lens
• Ocular 10x Objective 40x:10 x 40 = 400
Objective Lens have
their magnification
written on them.
Ocular lenses usually magnifies by 10x
So the object is 400 times “larger”
![Page 23: The Microscope - WordPress.com · Anthony van Leeuwenhoek 1632-1723 Robert Hooke 1635-1703 Hooke Microscope . The History Zacharias Jansen 1588-1631 The “First” Microscope. How](https://reader033.vdocuments.site/reader033/viewer/2022042810/5f9ac46d7eab0a32017dc707/html5/thumbnails/23.jpg)
Caring for a Microscope
• Clean only with a soft cloth/tissue
• Make sure it’s on a flat surface
• Don’t bang it
• Carry it with 2 HANDS…one on the arm and the other on the base
![Page 24: The Microscope - WordPress.com · Anthony van Leeuwenhoek 1632-1723 Robert Hooke 1635-1703 Hooke Microscope . The History Zacharias Jansen 1588-1631 The “First” Microscope. How](https://reader033.vdocuments.site/reader033/viewer/2022042810/5f9ac46d7eab0a32017dc707/html5/thumbnails/24.jpg)
Carry a Microscope Correctly
![Page 25: The Microscope - WordPress.com · Anthony van Leeuwenhoek 1632-1723 Robert Hooke 1635-1703 Hooke Microscope . The History Zacharias Jansen 1588-1631 The “First” Microscope. How](https://reader033.vdocuments.site/reader033/viewer/2022042810/5f9ac46d7eab0a32017dc707/html5/thumbnails/25.jpg)
Using a Microscope
• Start on the lowest magnification
• Don’t use the coarse adjustment knob
on high magnification…you’ll break the
slide!!!
• Place slide on stage and lock clips
• Adjust light source (if it’s a mirror…don’t stand in front of it!)
• Use fine adjustment to focus
![Page 26: The Microscope - WordPress.com · Anthony van Leeuwenhoek 1632-1723 Robert Hooke 1635-1703 Hooke Microscope . The History Zacharias Jansen 1588-1631 The “First” Microscope. How](https://reader033.vdocuments.site/reader033/viewer/2022042810/5f9ac46d7eab0a32017dc707/html5/thumbnails/26.jpg)
References
• http://www.cerebromente.org.br/n17/history/neurons1_i.htm
• Google Images
• http://science.howstuffworks.com/light-microscope1.htm