Untitled Quiz

Study Notes

Microscope Parts and Functions

Ocular Lens: Eyepiece that magnifies the image 10x as projected by the objective lens.
Body Tube: Connects the ocular lens to objective lenses, ensuring proper alignment of light from specimen to viewer's eye.
Arm: Supports the body tube and connects to the base; important for safe handling of the microscope.
Coarse Adjustment Knob: Used first for major focus adjustments under low power; improper for high power use.
Fine Adjustment: Provides precise focusing under high power; essential for clear viewing of details.
Rotating/Revolving Nosepiece: Holds objective lenses; can rotate to change magnification easily.
Objective Lenses: Includes low, medium, and high power lenses for varying magnification levels—adjustable system.
Low Power Lens: Lowest magnification at 4x, ideal for initial viewing of specimens.
Medium Power Lens: Offers medium magnification of 10x, useful for detailed examination.
High Power Lens: Highest magnification at 40x, designed for viewing fine details in specimens.
Stage: Platform for slides with a hole to allow light to illuminate the specimen from below.
Stage Clips: Secure slides in place on the stage to prevent movement during observation.
Diaphragm: Rotating dial adjusts light intensity reaching the specimen; crucial for optimal visibility.
Base: Provides stability and support for the microscope; houses the light source and electronics.
Light Source/Illuminator: An electric light or mirror that directs light upwards towards the specimen.
Condenser Lens: Focuses light from the illuminator through the stage’s hole onto the specimen for better clarity.
Proper Carrying Technique: Always support the microscope by the arm while holding the base with the other hand.
Anton van Leeuwenhoek: Recognized as the father of microscopy; discovered bacteria using simple microscopes.
Total Magnification Formula: Calculated by multiplying the magnification of the ocular lens by the magnification of the objective lens.