the microscope
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WHEN TRANSPORTING THE MICROSCOPE, HOLD IT IN AN UPRIGHT POSITION WITH ONE HAND ON ITS ARM AND THE OTHER SUPPORTING ITS BASE. AVOID SWINGING THE INSTRUMENT DURING ITS TRANSPORT AND JARRING THE INSTRUMENT WHEN SETTING IT DOWN.
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EXPLAIN THE PROPER TECHNIQUE FOR TRANSPORTING THE MICROSCOPE.
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FALSE; ONLY WITH SPECIAL GRIT-FREE LENS PAPER
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THE MICROSCOPE LENS MAY BE CLEANED (WITH ANY SOFT TISSUE).
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FALSE; LOWEST-POWER OBJECTIVE
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THE MICROSCOPE SHOULD BE STORED WITH THE (OIL IMMERSION) LENS IN POSITION OVER THE STAGE.
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"EYEPIECES" ARE LOCATED ON TOP OF THE BODY TUBE AND USUALLY HAVE A MAGNIFICATION POWER OF 10X.
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Ocular lenses
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holds the ocular lens
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Body Tube
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supports upper parts and provides a carrying handle
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Arm
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revolving device that holds objective lens
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Nosepiece
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adjustable lens system that permits the use of a scanning lens. low-power lens, higher power lens, oil immersion lens
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Objective Lens
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short objective lens and is used to scan the whole slide
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Scanning objective
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this is lens is longer than the scanning power objective lens and is used to view objects in greater detail
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Low-power objective
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this lens will be the longest and is used to view an object in even greater detail
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high-pwer objective
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PLATFORM ON WHICH THE SLIDE RESTS FOR VIEWING
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Stage
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SECURE(S) THE SLIDE TO THE STAGE
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mechanical stage or spring clips
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knob used to bring the object into approximate focus; used only with scanning power objective
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coarse-adjustment knob
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SED FOR PRECISE FOCUSING ONCE INITIAL FOCUSING HAS BEEN DONE
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fine-adjustment knob
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DELIVERS A CONCENTRATED BEAM OF LIGHT TO THE SPECIMEN
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condenser
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USED TO INCREASE THE AMOUNT OF LIGHT PASSING THROUGH THE SPECIMEN
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iris diaphragm
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the flat surface of the microscope that rests on the table
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base
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true
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WHEN BEGINNING TO FOCUS, USE THE (LOWEST-POWER) LENS.
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F:FALSE; AWAY (SO YOU WONT GET TO CLOSE AND BREAK THE SLIDE)
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WHEN FOCUSING, ALWAYS FOCUS (TOWARD) THE SPECIMEN.
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F:FALSE; WITH WET MOUNTS only
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A COVERSLIP SHOULD ALWAYS BE USED (WITH WET MOUNTS AND THE HIGH-POWER AND OIL LENSES).
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carries the objective lenses; rotates so that the different objective lenses can be brought into position over the specimen
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movable nosepiece
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working distance
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THE DISTANCE FROM THE BOTTOM OF THE OBJECTIVE LENS IN USE TO THE SPECIMEN IS CALLED THE
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left
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ASSUME THERE IS AN OBJECT ON THE LEFT SIDE OF THE FIELD THAT YOU WANT TO BRING TO THE CENTER (THAT IS, TOWARD THE APPARENT RIGHT). IN WHAT DIRECTION WOULD YOU MOVE YOUR SLIDE?
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fiel
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THAT AREA OF THE SPECIMEN SEEN WHEN LOOKING THROUGH THE MICROSCOPE IS THE
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95X
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IF A MICROSCOPE HAS A 10X OCULAR AND THE TOTAL MAGNIFICATION AT THE PARTICULAR TIME IS 950X, THE OBJECTIVE LENS IS USE AT THE TIME IS
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TO PROVIDE MORE CONTRAST
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WHY SHOULD THE LIGHT BE DIMMED WHEN LOOKING AT LIVING (NEARLY TRANSPARENT) CELLS?
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PARFOCAL
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IF, AFTER FOCUSING IN LOW POWER, ONLY THE FINE ADJUSTMENT NEED BE USED TO FOCUS THE SPECIMEN AT THE HIGHER POWERS, THE MICROSCOPE IS SAID TO BE
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.75MM
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IF, WHEN USING A 10X OCULAR AND A 15X OBJECTIVE, THE FIELD SIZE IS 1.5 MM, THE APPROXIMATE FIELD SIZE WITH A 30X OBJECTIVE IS
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.4MM
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IF THE SIZE OF THE HIGH-POWER FIELD IS 1.2 MM, AND OBJECT THAT OCCUPIES APPROXIMATELY A THIRD OF THAT FIELD HAS AN ESTIMATED DIAMETER OF
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INCREASE
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DO THE FOLLOWING FACTORS INCREASE OR DECREASE AS ONE MOVES TO HIGHER MAGNIFICATIONS WITH THE MICROSCOPE? RESOLUTION ___
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DECREASE
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DO THE FOLLOWING FACTORS INCREASE OR DECREASE AS ONE MOVES TO HIGHER MAGNIFICATIONS WITH THE MICROSCOPE? WORKING DISTANCE ___
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INCREASE
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DO THE FOLLOWING FACTORS INCREASE OR DECREASE AS ONE MOVES TO HIGHER MAGNIFICATIONS WITH THE MICROSCOPE? AMOUNT OF LIGHT NEEDED ___
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DECREASE
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DO THE FOLLOWING FACTORS INCREASE OR DECREASE AS ONE MOVES TO HIGHER MAGNIFICATIONS WITH THE MICROSCOPE? DEPTH OF FIELD ____
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THE OBJECT IS PLACED IN A DROP OF WATER (OR SALINE) ON A CLEAN SLIDE. 2. A COVER-SLIP IS HELD AT A 45 DEGREE ANGLE WITH THE FINGERTIPS. 3. IT IS LOWERED CAREFULLY OVER THE WATER AND THE OBJECT.
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DESCRIBE THE PROPER PROCEDURE FOR PREPARING A WET MOUNT.
