PARTS OF THE COMPOUND LIGHT MICROSCOPE Ocular Lens

PARTS OF THE COMPOUND LIGHT MICROSCOPE Ocular Lens / Eyepiece A magnify the image of • Contains a lens to _______ the specimen. 10 X. • The usual magnification is ___ • The lens that we look through.

PARTS OF THE COMPOUND LIGHT MICROSCOPE Body Tube B connects the eyepiece to the objective • It ____ lenses. • It ensures the correct alignment ____ of the microscope components to correctly direct the light from the specimen into _____ the viewer’s eye.

PARTS OF THE COMPOUND LIGHT MICROSCOPE Arm C connects the body tube to the base. • It ____ • One hand ____ should be around the arm when _______ carrying the microscope (the other should be under the base ____).

PARTS OF THE COMPOUND LIGHT MICROSCOPE Arm C connects the body tube to the base. • It ____ • One hand ____ should be around the arm when _______ carrying the microscope (the other should be under the base ____).

PARTS OF THE COMPOUND LIGHT MICROSCOPE Base • It ____ supports the weight of the microscope. light source • It contains the electronics _____ and _____. • One hand should be under _____ the base while _______ carrying the microscope (the other hand should be holding the arm). D

PARTS OF THE COMPOUND LIGHT MICROSCOPE Base • It ____ supports the weight of the microscope. light source • It contains the electronics _____ and _____. • One hand should be under _____ the base while _______ carrying the microscope (the other hand should be holding the arm). D

PARTS OF THE COMPOUND LIGHT MICROSCOPE Light Source / Illuminator • It sends light upwards _______ through the condenser lens and through the ____ hole in _______ the stage onto the specimen ____ on the slide. E

PARTS OF THE COMPOUND LIGHT MICROSCOPE Light Source / Illuminator mirror • It sends light upwards _______ through the • condenser lens and through the ____ hole in _______ the stage onto the specimen ____ on the slide. Older microscopes used to use mirrors ______ to ______ reflect the ambient light upwards. E

PARTS OF THE COMPOUND LIGHT MICROSCOPE Revolving/Rotating Nose Piece F lenses are attached to it. • Theobjective _______ • Rotating _______ the nose piece allows you to switch _____ between the different lenses.

PARTS OF THE COMPOUND LIGHT MICROSCOPE Objective Lenses Low (scanning) 4 X Medium 10 X G High 40 X • These lenses further magnify _______ the image of the specimen. 4 X , 10 X • The magnifications are usually ____ 40 X. and ____ 3 lenses • There are usually __

PARTS OF THE COMPOUND LIGHT MICROSCOPE Objective Lenses Low Medium High G • As the power increases, the magnification becomes larger _____ , but the field of view smaller (visible area) becomes _______.

PARTS OF THE COMPOUND LIGHT MICROSCOPE Coarse Adjustment Knob H first knob you should use, and always • The ____ high power. under low ___ power. Never use it in ____

PARTS OF THE COMPOUND LIGHT MICROSCOPE Fine Adjustment Knob H I first knob you should use, and always • The ____ • • high power. under low ___ power. Never use it in ____ The second ______ knob you should use. Use exact focusing. higher power for _____ under ______ stage up and down Both knobs move the _____ to help put the specimen in focus _____.