The document describes the main components of a light microscope and their functions. It includes: 1) The eye piece or ocular, which is the lens used to view the specimen. 2) The body tube, which supports the eyepiece. 3) The revolving nosepiece, which holds the objective lenses and allows them to be changed. 4) The stage, which holds the specimen in place under the objectives.

1. Eye Piece (ocular)
Coarse Focus
Fine Focus
Arm
Stage Clips
Pivot
Point
Base
Body Tube
Revolving Nose Piece
Low Power Objective
High Power Objective
Stage
Diaphragm
Mirror 1

2. 1) Eye Piece (ocular) –
the lens that you look through
2) Body Tube –
the tube that supports the eyepiece
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3. 3) Revolving Nosepiecethe rotating device that holds and
changes the objectives (lenses).
Revolving
AperatureOpening in the
stabe to allow light
from mirror or
light to pass
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4. 4) Low Power
Objective –
 magnification lens
with the lowest power
5) High Power
Objective –
 magnification lens
with the highest
power
6) Stage Clips –
clips that keep the slide or specimen from moving
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on the stage

5. 7) Stage –
holds the specimen
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6. 8) Diaphragmcontrols the amount of light entering through
the aperature to the objectivefrom the bottom
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7. 9) Pivot Pointpart that allows
you to tip the
ocular toward
you
Pivot
Point
Base
Mirror
10) Basesupports the microscope
11) Mirror
reflects (bends) the light upward onto the slide
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8. 12) Fine Focus Adjustment –
moves the body tube in small increments
13) Coarse Focus Adjustmentmoves the body
tube in large
increments
14) Arm –
attaches the
eyepiece and the
body tube to the
base
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9. 9

10. Calculate Total Magnification
Total Magnification =
ocular power x objective lens power using
Ocular power is generally 10X, meaning
it has a magnification or power of 10X
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11. 11

12. Elodea
40 x
Elodea
400x
Elodea
100x
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13. The end
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14. STOP:
TEACHER NOTES &
ADDITIONAL PICS
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