Transcript Microscope Parts and Functions

Light Microscope
Parts and Functions
A. Eye piece
Contains the ocular lens
Magnification 10x
K. Arm
Used to support the microscope
when carried.
B. Revolving Nose Piece
Holds the low and high-power objective
lenses; can be rotated to change
lenses so that a slide can be seen at
different magnifications
C. Objective Lenses
Magnification ranges from 4x to 40x
Scanning Objective Lens
Magnification 4x
Total Magnification =
Eyepiece x Objective Lens
Total Magnification for scanning
objective lens =
Scanning Objective Lens
Magnification 4x
Total Magnification =
Eyepiece x Objective Lens
Total Magnification for scanning
objective lens = 40x
Low Power Objective
Lens
Magnification 10x
Total Magnification =
Low Power Objective
Lens
Magnification 10x
Total Magnification = 100x
High Power Objective
Lens
Magnification 40x
Total Magnification =
High Power Objective
Lens
Magnification 40x
Total Magnification = 400x
E. Stage
Supports the slide being viewed
D. Stage Clips
Holds slide in place on stage
J. Coarse Adjustment
Knob
Moves the stage up and down for
focusing an image
I. Fine Adjustment Knob
Moves the stage slightly to
increase the clarity of the image
H. Diaphragm
Regulates the amount of light that
enters the microscope
G. Base
Supports the microscope
F. Light Source
Projects light rays through the
diaphragm, the slide to be seen,
and the lenses
THE END
2
How to use a microscope
 Total
 Use
Magnification:
Eye piece x objective lens =
the SCANNING objective lens first!!!
 NEVER
use the coarse adjustment knob
when you’re on HIGH power!!!!!!!!!!!!!!!!!!!!!