eyepiece

arm

the large metal band attaching the base to the lens and eyepiece

(when carrying a microscope, one hand must hold the arm. the other goes under the base.)

fine adjustment knob

the smaller round knob on the side of the micropscope used to fine-tune the focus of your specimen after using the coarse adjustment knob

coarse adjustment knob

• the larger knob on the microscope
• used to focus on the specimen
• move the stage or the upper part of the microscope up and down
• always focus with the coarse knob first

objective lens

• most microsopes have 2 or more lenses that magnify at different powers
• the shortest lens is usually the lowest power
• always start with the lowest power lens, then work your way up to the strongest when examining a specimen

stage

iris diaphragm

controls the amount of light on the specimen that comes through the stage through the aperture

light source

a bulb or mirror near the base of the microscope that shine light through the stage

aperture

the hole in the stage that allows light through for better viewing of the specimen

for picture go to

http://www.kbears.com/sciences/microscopedefinition.html

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