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ANP
The Microscope
Question | Answer |
---|---|
What total magnification with be achieved if the 10x eyepiece and the 10x objective are used? | 100× |
What total magnification will be achieved if the 10x eyepiece and the 100x objective are used? | 1,000× |
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 |
The diameter of the scanning-power (lowest power, 40X) field of view is 4.4 millimeters. | True |
If a circular object or specimen extends halfway across the scanning-power field, what is its diameter in millimeters? | About 2.2 mm |
In micrometers, what is its diameter? | About 2,200 micrometers |
The diameter of the field of view at low-power (100X) is 1.8 millimeters | True |
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. |
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. |
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. |
Increases or decreases the light intensity | Iris diaphragm |
Platform that supports a microscope slide | Stage |
Concentrates light onto the specimen | Condenser |
Causes stage (or objective lens) to move upward or downward | Adjustment knob |
After light passes through the specimen, it next enters this lens system | Objective lens system |
Holds a microscope slide in position | Stage (slide) clip |
Contains a lens at the top of the body tube | Eyepiece (ocular) |
Serves as a handle for carrying the microscope | Arm |
Part to which the objective lenses are attached | Nosepiece |
Circular area seen through the eyepiece | Field of view |