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Lab 01: Compound light microscope
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Terms in this set (18)
Parts of a compound light microscope
Ocular lens/eyepiece
Lens viewer looks through to see the specimen.
Eyepiece usually contains a 10X or 15X lens
Head
The body tube that connects the eyepiece to the objective lens.
Frame/arm
The arm connects the body tube to the base of the microscope
Stage Control
These knobs move the stage left, right, up, and down
Coarse adjustment
Brings specimen into general focus
Fine adjustment
Fine tunes the focus and increases the detail of the specimen
Light switch
Powers on the light
Base
Supports the microscope and it's where illuminator is located.
Brightness adjustment
a turn knob that adjusts the amount of light being used.
Illumination
The light source for the microscope.
Condenser
Gathers and focuses light from the illuminator onto the specimen being viewed.
Mechanical stage
The flat platform where the specimen is placed.
Nose piece
A rotating turret that houses the objective lenses.
diopter adjustment
Useful as a means to change focus on one eyepiece so as to correct any difference in vision between the two eyes.
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Verified questions
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A train sounds its horn as it approaches an intersection. The horn can just be heard at a level of 50 dB by an observer 10 km away. What is the average power generated by the horn? Treat the horn as a point source and neglect any absorption of sound by the air.
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You freely pivot a horseshoe from a horizontal nail through one of its nail holes. You then hang a long string with a weight at its bottom from the same nail, so that the string hangs vertically in front of the horseshoe without touching it. How do you know that the horseshoe’s center of gravity is along the line behind the string? How can you locate the center of gravity by repeating the process at another nail hole? Will the center of gravity be within the solid material of the horseshoe?
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A spring is attached to the bottom of an empty swimming pool, with the axis of the spring oriented vertically. An 8.00-kg block of wood $$ \left( \rho = 840 \mathrm { kg } / \mathrm { m } ^ { 3 } \right) $$ is fixed to the top of the spring and compresses it. Then the pool is filled with water, completely covering the block. The spring is now observed to be stretched twice as much as it had been compressed. Determine the percentage of the block's total volume that is hollow. Ignore any air in the hollow space.
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