Stereoscope Electron Microscope Compound Light Microscope uses 2 ...
microscope.notebook
October 18, 2015
Microscopes tools used to enlarge images of small objects so as they can be studied.
Stereoscope
Example cells
Electron Microscope
3 lenses to magnify bigger 3D objects
uses beams of electrons to magnify extremely small objects
Compound Light Microscope uses 2 lens to magnify small objects.
1
microscope.notebook
October 18, 2015
The Compound Light Microscope has two lenses (used to magnify or enlarge the image) two knobs to focus the image.
images seen through the microscope are upside down and backwards. The letter "e" as seen through the microscope
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microscope.notebook
October 18, 2015
Early Microscopes The first microscope was made in the late 1500's by putting 2 magnifying glasses together. In the 1600's, a Dutch fabric merchant named Anton van Leeuwenhoek made a microscope using a tiny glass bead for a lens. It could magnify objects up to 270 times larger than its actual size (it had a power of 270x). He reported seeing things in pond water that no one had ever imagined!
3
microscope.notebook
October 18, 2015
Field Of View The visible diameter across the microscope
4
microscope.notebook
October 18, 2015
Calculating Total Magnification Eyepiece X Objective = Total Magnification Low Power This means that images seen through 10x X 4x = 40x
Medium Power 10x X 10x = 100x High Power
the microscope appear 40, 100 and 400 times bigger than they actually are!
10x X 40x = 400x
5
microscope.notebook
October 18, 2015
Low Power Stem at 40x Medium Power Stem at 100x
High Power Stem at 400x
6
microscope.notebook
October 18, 2015
7
microscope.notebook
October 18, 2015
Procedure for using the Microscope Always begin on LOW POWER (smallest objective lens) Focus by using the coarse adjustment knob first (this will bring the stage up) Then, use the fine adjustment to sharpen your focus. You may use BOTH the coarse and fine adjustment on LOW and MEDIUM POWER. On HIGH POWER, do NOT use the coarse adjustment knob. Use the fine adjustment ONLY!!! 8
October 18, 2015
Microscopes tools used to enlarge images of small objects so as they can be studied.
Stereoscope
Example cells
Electron Microscope
3 lenses to magnify bigger 3D objects
uses beams of electrons to magnify extremely small objects
Compound Light Microscope uses 2 lens to magnify small objects.
1
microscope.notebook
October 18, 2015
The Compound Light Microscope has two lenses (used to magnify or enlarge the image) two knobs to focus the image.
images seen through the microscope are upside down and backwards. The letter "e" as seen through the microscope
2
microscope.notebook
October 18, 2015
Early Microscopes The first microscope was made in the late 1500's by putting 2 magnifying glasses together. In the 1600's, a Dutch fabric merchant named Anton van Leeuwenhoek made a microscope using a tiny glass bead for a lens. It could magnify objects up to 270 times larger than its actual size (it had a power of 270x). He reported seeing things in pond water that no one had ever imagined!
3
microscope.notebook
October 18, 2015
Field Of View The visible diameter across the microscope
4
microscope.notebook
October 18, 2015
Calculating Total Magnification Eyepiece X Objective = Total Magnification Low Power This means that images seen through 10x X 4x = 40x
Medium Power 10x X 10x = 100x High Power
the microscope appear 40, 100 and 400 times bigger than they actually are!
10x X 40x = 400x
5
microscope.notebook
October 18, 2015
Low Power Stem at 40x Medium Power Stem at 100x
High Power Stem at 400x
6
microscope.notebook
October 18, 2015
7
microscope.notebook
October 18, 2015
Procedure for using the Microscope Always begin on LOW POWER (smallest objective lens) Focus by using the coarse adjustment knob first (this will bring the stage up) Then, use the fine adjustment to sharpen your focus. You may use BOTH the coarse and fine adjustment on LOW and MEDIUM POWER. On HIGH POWER, do NOT use the coarse adjustment knob. Use the fine adjustment ONLY!!! 8
