Parts of the Microscope

Compound Light Microscope Parts and Functions

Compound Light Microscope Parts and Functions eyepiece

Eyepiece – what you look through, where you place your eye

Compound Light Microscope Parts and Functions eyepiece arm

Eyepiece – what you look through, where you place your eye Arm – supports the body tube and lenses

Compound Light Microscope Parts and Functions eyepiece arm stage

Eyepiece – what you look through, where you place your eye Arm – supports the body tube and lenses Stage – the platform on which a slide is placed

Compound Light Microscope Parts and Functions eyepiece arm stage coarse focus adjustment

Eyepiece – what you look through, where you place your eye Arm – supports the body tube and lenses Stage – the platform on which a slide is placed Coarse focus adjustment – knob that makes large adjustments to the focus

Compound Light Microscope Parts and Functions eyepiece arm stage coarse focus adjustment fine focus adjustment

Eyepiece – what you look through, where you place your eye Arm – supports the body tube and lenses Stage – the platform on which a slide is placed Coarse focus adjustment – knob that makes large adjustments to the focus Fine focus adjustment – knob that makes small adjustments to the focus

Compound Light Microscope Parts and Functions eyepiece arm stage coarse focus adjustment fine focus adjustment base

Eyepiece – what you look through, where you place your eye Arm – supports the body tube and lenses Stage – the platform on which a slide is placed Coarse focus adjustment – knob that makes large adjustments to the focus Fine focus adjustment – knob that makes small adjustments to the focus Base – supports the microscope

Compound Light Microscope Parts and Functions eyepiece arm stage coarse focus adjustment light source fine focus adjustment base

Eyepiece – what you look through, where you place your eye Arm – supports the body tube and lenses Stage – the platform on which a slide is placed Coarse focus adjustment – knob that makes large adjustments to the focus Fine focus adjustment – knob that makes small adjustments to the focus Base – supports the microscope Light source – directs light upwards onto the slide

Compound Light Microscope Parts and Functions eyepiece arm stage coarse focus adjustment diaphragm light source fine focus adjustment base

Eyepiece – what you look through, where you place your eye Arm – supports the body tube and lenses Stage – the platform on which a slide is placed Coarse focus adjustment – knob that makes large adjustments to the focus Fine focus adjustment – knob that makes small adjustments to the focus Base – supports the microscope Light source – directs light upwards onto the slide Diaphragm – adjustable opening under stage, allows different amounts of light

Compound Light Microscope Parts and Functions eyepiece arm stage stage clips coarse focus adjustment diaphragm light source fine focus adjustment base

Eyepiece – what you look through, where you place your eye Arm – supports the body tube and lenses Stage – the platform on which a slide is placed Coarse focus adjustment – knob that makes large adjustments to the focus Fine focus adjustment – knob that makes small adjustments to the focus Base – supports the microscope Light source – directs light upwards onto the slide Diaphragm – adjustable opening under stage, allows different amounts of light Stage clips – holds the slide securely onto the stage

Compound Light Microscope Parts and Functions eyepiece arm objective lenses stage stage clips coarse focus adjustment diaphragm light source fine focus adjustment base

Eyepiece – what you look through, where you place your eye Arm – supports the body tube and lenses Stage – the platform on which a slide is placed Coarse focus adjustment – knob that makes large adjustments to the focus Fine focus adjustment – knob that makes small adjustments to the focus Base – supports the microscope Light source – directs light upwards onto the slide Diaphragm – adjustable opening under stage, allows different amounts of light Stage clips – holds the slide securely onto the stage Low Power Objective – a small lens with low magnifying power High Power Objective – a large lens with high magnifying power

Compound Light Microscope Parts and Functions eyepiece revolving nosepiece arm objective lenses stage stage clips coarse focus adjustment diaphragm light source fine focus adjustment base

Eyepiece – what you look through, where you place your eye Arm – supports the body tube and lenses Stage – the platform on which a slide is placed Coarse focus adjustment – knob that makes large adjustments to the focus Fine focus adjustment – knob that makes small adjustments to the focus Base – supports the microscope Light source – directs light upwards onto the slide Diaphragm – adjustable opening under stage, allows different amounts of light Stage clips – holds the slide securely onto the stage Low Power Objective – a small lens with low magnifying power High Power Objective – a large lens with high magnifying power Revolving Nosepiece – rotating device that holds the objectives (lenses)

Compound Light Microscope Parts and Functions eyepiece body tube revolving nosepiece arm objective lenses stage stage clips coarse focus adjustment diaphragm light source fine focus adjustment base

Eyepiece – what you look through, where you place your eye Arm – supports the body tube and lenses Stage – the platform on which a slide is placed Coarse focus adjustment – knob that makes large adjustments to the focus Fine focus adjustment – knob that makes small adjustments to the focus Base – supports the microscope Light source – directs light upwards onto the slide Diaphragm – adjustable opening under stage, allows different amounts of light Stage clips – holds the slide securely onto the stage Low Power Objective – a small lens with low magnifying power High Power Objective – a large lens with high magnifying power Revolving Nosepiece – rotating device that holds the objectives (lenses) Body tube – tube that supports the eyepiece

Handling the Microscope  Carry the microscope with two hands – one under base and the other on the arm  Place the microscope on the table with the arm facing towards you Place the microscope at least 10 cm from the edge of the table Always wipe the lenses with lens paper before and after use

Focusing the Microscope  Look into eyepiece with both eyes open  Always focus first with the low power objective using the coarse adjustment  Use the fine adjustment to make the image clearer and sharper  Never use the coarse adjustment knob while using high power  Be careful that the objective lenses do not touch the glass slide  Never search for the specimen under high power

Storage of the Microscope  Store microscope with low power objective in place, with stage racked all the way down, cord wrapped up, and with the cover on the microscope

Determining Total Magnification Magnification = the ability to make an image appear larger compared to its actual size The formula for determining total magnification is: Total magnification = ocular magnification x objective magnification

Determining Total Magnification The formula for determining total magnification is: Total magnification = ocular magnification x objective magnification Type of Lens Magnification Ocular 10x Low power Med power High power

Determining Total Magnification The formula for determining total magnification is: Total magnification = ocular magnification x objective magnification Type of Lens Magnification Ocular 10x Low power 4x Med power High power

Determining Total Magnification The formula for determining total magnification is: Total magnification = ocular magnification x objective magnification Type of Lens Magnification Ocular 10x Low power 4x Med power High power

Determining Total Magnification The formula for determining total magnification is: Total magnification = ocular magnification x objective magnification Type of Lens Magnification Ocular 10x Low power 4x Med power High power 40x What is the total magnification using the 4x objective lens? 10x x 4x = 40x What is the total magnification using the 10x objective lens? 10x x 10x = 100x What is the total magnification using the 40x objective lens? 10x x 40x = 400x