The Microscope
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| What total magnification with be achieved if the 10x eyepiece and the 10x objective are used? | 100×
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| What total magnification will be achieved if the 10x eyepiece and the 100x objective are used? | 1,000×
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| Microscopic objects often are measured in micrometers. A micrometer equals 1/1,000 of a millimeter and is symbolized by µm. In micrometers, what is the diameter of the scanning power field of view? | About 4,500 micrometers
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| The diameter of the scanning-power (lowest power, 40X) field of view is 4.4 millimeters. | True
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| If a circular object or specimen extends halfway across the scanning-power field, what is its diameter in millimeters? | About 2.2 mm
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| In micrometers, what is its diameter? | About 2,200 micrometers
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| The diameter of the field of view at low-power (100X) is 1.8 millimeters | True
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| How does the diameter of the scanning power field of view compare with that of the low-power field? | The diameter of the scanning-power field of view is about 2.6 times greater than that of lower power filed of view.
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| Why is it more difficult to measure the diameter of the high-power field of view than the low-power field? | Student is unable to see two adjacent mm lines on the scale in a high-power field of view.
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| What change occurred in the light intensity of the field of view when you exchanged the low-power objective for the high-power objective? | Light intensity is decreased when high-power objective is used.
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| Increases or decreases the light intensity | Iris diaphragm
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| Platform that supports a microscope slide | Stage
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| Concentrates light onto the specimen |
Condenser
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| Causes stage (or objective lens) to move upward or downward | Adjustment knob
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| After light passes through the specimen, it next enters this lens system | Objective lens system
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| Holds a microscope slide in position | Stage (slide) clip
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| Contains a lens at the top of the body tube | Eyepiece (ocular)
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| Serves as a handle for carrying the microscope | Arm
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| Part to which the objective lenses are attached | Nosepiece
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| Circular area seen through the eyepiece | Field of view
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