Eye piece that is typically 10X or 15X magnification
Ocular lens1
Calculated by multiplying the magnification of the ocular lens by the objective lens
Total magnification factor2
Visible area of a slide that can be observed
Field of view3
Distance range that is in focus at a given time
Depth of field4
Held by the turret closest to the stage, and range in power from 4x to 100x magnification
Objective lens5
2. Match each description with the correct type of microscope.
Optical Electron Scanning Pr
1Example: stereoscopic 2Utilizes a beam of electrons to 3Utilizes a very small, ve
microscope Example: compound magnify Example: transmission electron to trace the surface of a sa
microscope Example: scanning electron microscope visible light and a series o
microscope convex lenses
Correct answers:
1Example: stereoscopic microscopeUtilizes visible light and a series of two or
more convex lenses Example: compound microscope
2Example: transmission electron microscopeUtilizes a beam of electrons to
magnifyExample: scanning electron microscope
3Utilizes a very small, very sharp probe to trace the surface of a sample
Exploration
1. A compound microscope is a type of optical microscope.
True
False
FEEDBACK
,Well done!
2. The _____ sits below the stage and varies the field for viewing the specimen.
diaphragm
coarse adjustment knob
base
turret
FEEDBACK
Outstanding!
3. The depth of field is independent of the total magnification factor.
True
False
FEEDBACK
Right! Like field of view, the depth of field is dependent on the total magnification factor.
4. A stereoscopic microscope is also known as a _____.
scanning microscope
2-D imaging microscope
dissecting microscope
All of the above
FEEDBACK
A stereoscopic microscope is also known as a dissecting microscope.
5. An electron microscope uses _____ to illuminate an object and create an image.
, visible light
infrared light
electrons
All of the above
FEEDBACK
Good!
6. A transmission electron microscope is similar in design to a(n) _____.
scanning electron microscope
optical microscope
stereoscopic microscope
scanning probe microscope
FEEDBACK
Excellent!
7. The larger the apex of the probe, the greater the resolution of the scanning probe
microscope.
True
False
FEEDBACK
Nice! The smaller and sharper the apex of the probe, the greater the resolution of the microscope.
Exercise 1