Microscopy & Cells - Lab 1

Vocabulary flashcards covering microscope anatomy, component functions, and total magnification calculations.

Ocular lens

Part where eyes look through that magnifies the specimen $10\times$.

Arm

Supports the ocular and objective lenses.

Base

Platform that supports the entire microscope.

Objective lens

Magnifies specimen with various magnifications ($4\times$, $10\times$, $40\times$, $100\times$).

Mechanical Stage

Platform that holds the specimen slide, equipped with clips to hold the slide in place, which can move left to right and back and forth.

Lamp

Produces light for viewing specimens.

Power cord

Provides power for the lamp when plugged in.

Stage Clip

Holds the specimen slide in place on the stage.

Stage knob

Moves the stage and specimen slide left to right and front to back.

Rheostat

Controls light level being produced by the lamp.

Coarse focus knob

Knob used to make large changes in focus; especially important for $4\times$ and $10\times$ objective lenses.

Fine focus knob

Knob used to make small changes in focus; especially important for $40\times$ and $100\times$ objective lenses.

Power switch

Turns the microscope on and off.

Diaphragm

Iris mechanism that controls the amount of light that reaches the specimen.

Condenser

Focuses the light from the lamp onto the specimen.

Condenser knob

Controls how far the condenser is from the slide.

Revolving nosepiece

Holds the objective lenses immediately above the specimen and rotates them into place to adjust magnification.

Scanning objective

Objective lens with $4\times$ magnification, yielding a total magnification of $10\times (4) = 40\times$.

Low objective lens

Objective lens with $10\times$ magnification, yielding a total magnification of $10\times (10) = 100\times$.

High power objective

Objective lens with $40\times$ magnification, yielding a total magnification of $10\times (40) = 400\times$.

Oil immersion objective

Objective lens with $100\times$ magnification, yielding a total magnification of $10\times (100) = 1000\times$.