Transcript name location description function

1. 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?
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
OBJECTIVES
ATTACHED TO
NOSEPIECE
4 METAL CYLINDERS WITH
DIFFERENT MAGNIFYING POWERS
(4X-SCANNING, 10X-LOW POWER,
40X-HIGH DRY, 100X-OIL IMMERSION
STAGE
(PLATFORM)
UNDER THE OBJECTIVES
FLAT SURFACE WITH HOLE IN THE
CENTER
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”)
ALLOWS CHANGING OF
OBJECTIVES FOR DIFFERENT
POWERS OF MAGNIFICATION
MAGNIFY IMAGE OF THE
SPECIMEN FOR VIEWING
(ALWAYS START WITH 4X OR
10X)
MICROSCOPE SLIDE IS PLACED
UPON THIS SURFACE FOR
OBSERVATION
B. cereus
E. coli
S. aureus
S. epidermidis