2. Always carry a microscope with one hand on the ________ and the other hand on the _________.
2. A microscope should be stored with the ________ objective in place.
3. Always bring a specimen into focus using the ___________ objective.
4. Never use the ____________ adjustment to focus the high-power objective.
5. Use only the __________ adjustment when focusing with the high-power objective.
6. Lenses should be cleaned with __________.
7.How is the magnification of a compound microscope determined?

3. NAME LOCATION DESCRIPTION FUNCTION
OCULAR
TOP OF MICROSCOPE
SINGLE LENS (10X)
CAN BE REMOVED
ENLARGES IMAGE OF
SPECIMEN FOR VIEWING
BINOCULAR HEAD
BETWEEN OCULAR AND NOSEPIECE
CONTAINS: OCULARS
INTERPUPILLARY ADJUSTMENT
INDIVIDUAL EYE FOCUS
SPLITS IMAGE IN TWO
ALLOWS ADJUSTMENT FOR USER’S EYES
ROTATING NOSEPIECE
ATTACHED TO UNDERSIDE OF BINOCULAR HEAD
CHROME WHEEL INTO WHICH OBJECTIVES ARE SET
ALLOWS CHANGING OF OBJECTIVES FOR DIFFERENT POWERS OF MAGNIFICATION
OBJECTIVES
ATTACHED TO NOSEPIECE
4 METAL CYLINDERS WITH DIFFERENT MAGNIFYING POWERS (4X-SCANNING, 10X-LOW POWER, 40X-HIGH DRY, 100X-OIL IMMERSION
MAGNIFY IMAGE OF THE SPECIMEN FOR VIEWING (ALWAYS START WITH 4X OR 10X)
STAGE (PLATFORM)
UNDER THE OBJECTIVES
FLAT SURFACE WITH HOLE IN THE CENTER
MICROSCOPE SLIDE IS PLACED UPON THIS SURFACE FOR OBSERVATION
MECHANICAL STAGE
ATTACHED TO STAGE
ADJUSTABLE BY KNOBS AT SIDE; CLIP USED TO HOLD AND CONTROL MOVEMENT OF MICROSCOPE SLIDE
MOVES THE SPECIMEN SLIDE UP AND DOWN, SIDE-TO-SIDE WITH KNOBS AT THE SIDE
SUBSTAGE CONDENSER
UNDER HOLE IN STAGE
AN ADJUSTABLE (UP-AND-DOWN) SET OF LENSES (LIKE A “FLAT” OBJECTIVE)
FOCUSES LIGHT FROM UNDERNEATH THROUGH THE SPECIMEN FOR VIEWING
IRIS DIAPHRAGM
INSIDE THE CONDENSER
CAMERA-LIKE OPENING WHICH ADJUSTS WITH SMALL LEVER
REGULATES THE AMOUNT OF LIGHT FOCUSED UPON THE SPECIMEN
ARM
AT BACK (“SPINE” OF THE MICROSCOPE
STRONG SUPPORTING PART OF MICROSCOPE
USED AS A “HANDLE” FOR CARRYING THE MICROSCOPE
BASE
(FOOT)
BOTTOM-MOST PART OF THE MICROSCOPE
PART UPON WHICH THE MICROSCOPE SITS
CONTAINS A LIGHT SOURCE AND SWITCH(ES) TO CONTROL THE BRIGHTNESS
COARSE
FOCUS
BOTH SIDES OF ARM NEAR LOWER PART OF MICROSCOPE
LARGEST KNOBS ON BOTH SIDES OF THE ARM
INITIAL, RAPID FOCUSING OF THE IMAGE OF THE SPECIMEN
FINE FOCUS
AT THE TIPS OF THE COARSE FOCUS KNOB
SMALLER KNOBS WHICH TURN MORE EASILY THAN COARSE FOCUS KNOBS
CRITICAL FOCUSING TO SHARPEN THE IMAGE OF THE SPECIMEN (“FINE-TUNING”)

4. B. cereus
S. aureus S. epidermidis
E. coli