Microscope Components and Usage

Fill-in-the-blank practice flashcards covering microscope components, magnifications, and proper operational procedures.

The component used to turn the light on and off is the __________ .

On/Off switch

When carrying the microscope frame, you should always use two hands: one under the base and one on the __________ .

arm

The observation head holds the eyepiece(s) and can be loosened to rotate using a knob on the CX23 or a(n) __________ on the CX31.

Allen wrench

The ocular lens (eyepiece) magnifies __________ on its own.

$$10\text{X}$$

The wheel that holds all four objective lenses and is rotated to switch magnification is the __________ .

revolving nosepiece

The $4\text{X}$ and $10\text{X}$ objectives are known as __________ power objectives.

low power

The $40\text{X}$ objective is also known as the __________ objective and is used without oil.

high-dry

The $100\text{X}$ objective is also known as the __________ objective.

oil immersion

The $100\text{X}$ objective requires a drop of oil between the slide and the __________ to see clearly.

lens

The flat platform where the slide sits is called the __________ .

stage

The __________ clips the slide in place so it does not slide around.

slide holder

To move the slide left/right and forward/back without touching it directly, you use the __________ .

stage knobs

The bulb that shines light up through the slide is the __________ .

light source

To dim or brighten the light from the light source, you adjust the __________ .

light intensity knob

The __________ works like a camera aperture, opening or closing to control how much light passes through.

iris diaphragm

The __________ gathers and focuses the light onto your specimen before it reaches the lens.

condenser

The course (coarse) focus knob makes big, fast adjustments and is only used at __________ .

$4\text{X}$ and $10\text{X}$

The fine focus knob makes small, precise adjustments and is only used at __________ .

$40\text{X}$ and $100\text{X}$

Never use the course focus knob at $40\text{X}$ and $100\text{X}$ because it can damage the lens or __________ .

crack the slide