Microscope Parts and Functions #3 Flashcards

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Questions and Answers

What does the Arm of the microscope do?

Supports the body tube and is used to carry the microscope.

What is the purpose of the Base in a microscope?

Supports the microscope and is used to carry it; the bottom part of the microscope.

What is the function of the Body tube?

Light passes through this hollow tube; it also maintains the correct distance between the eyepiece lens and the objective lens.

What does the Coarse adjustment knob do?

Turns to raise and lower the body tube or stage for focusing; always use this knob first. Signup and view all the answers

What is the function of the Diaphragm?

Changes the amount of light that enters the body tube. Signup and view all the answers

What is the Eyepiece?

Contains the lens you look through; the top part of the microscope. Signup and view all the answers

What does the Fine adjustment knob do?

Moves slightly and is used to sharpen the image. Signup and view all the answers

What is the role of the Mirror or light source?

Is used to send light up through the hole in the stage, object and lenses. Signup and view all the answers

What does the Nose piece do?

Holds the objective lenses and rotates to change magnification. Signup and view all the answers

What are Objective lenses?

Usually range from 10X to 40X magnification; located on nose piece. Signup and view all the answers

What is the function of the Stage?

Supports the object being viewed. Signup and view all the answers

What do Stage clips do?

Holds the microscope slide in place. Signup and view all the answers

How do you calculate total magnification?

Multiply the eyepiece magnification (10x) by the objective lens magnification. Signup and view all the answers

Why should you never use the Coarse adjustment knob when viewing an object at high power?

The lens and slide could collide and break. Signup and view all the answers

When you finish using a microscope, how should you prepare it for the next group?

On the lowest objective, the stage all the way down, switches on microscope, and power outlet turned off. Signup and view all the answers

What is a Coverslip?

The small, plastic, transparent material used to protect the specimen and the microscope. Signup and view all the answers

What is a Specimen?

The sample of material examined under a microscope. Signup and view all the answers

Study Notes

Microscope Components and Functions

Arm: Supports the body tube, facilitates carrying the microscope.
Base: The bottom section that supports the entire microscope structure and is used for transport.
Body Tube: Hollow structure allowing light passage; maintains the correct separation between eyepiece and objective lenses.
Coarse Adjustment Knob: Used for significant focusing adjustments; raise/lower body tube or stage. Recommended to use first; avoid during high power settings to prevent damage.
Diaphragm: Adjusts light intensity entering the body tube for optimal viewing contrast.
Eyepiece: Top section for viewing specimens, typically magnifies images at 10 times the original size.
Fine Adjustment Knob: Enables precise, minor adjustments for sharp image clarity; suitable for use under high power magnification.
Mirror or Light Source: Illuminates the specimen by directing light upward through the stage, object, and lenses.
Nose Piece: Houses objective lenses; allows rotation for changing magnification levels.
Objective Lenses: Magnification levels generally range from 10X to 40X; attached to the nose piece.
Stage: The platform supporting the specimen being examined.
Stage Clips: Mechanical holds securing the microscope slide in position during observation.

Important Procedures

Total Magnification Calculation: Multiply the eyepiece magnification (10X) by the objective lens magnification for overall magnification, e.g., for a 10X objective: 10 x 10 = 100X.
Coarse Adjustment Warning: Using the coarse adjustment knob at high power can lead to collisions between the lens and slide, risking breakage.
Microscope Maintenance: Before leaving the microscope for the next user, ensure it's set to the lowest objective with the stage lowered, and switch off the power outlet.
Coverslip: A protective, transparent material used over the specimen to prevent damage.
Specimen: Refers to the sample being viewed through the microscope.

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Description

Test your knowledge of the various parts of a microscope with these flashcards. This quiz focuses on the definitions and functions of key components such as the arm, base, and body tube. Perfect for students learning about microscopy.