Microscope Parts & Usage

Contains the magnifying lens you look through. EYEPIECE

Which objective lens would you use for first focusing the object? SCANNING

Scientist known for contributing to the third part of the ‘Cell Theory’ which states that all cells come from other cells. VIRCHOW

Maintains the proper distance between the eyepiece and the objective lenses. BODY TUBE (BARREL)

Which adjustment knob should be used on scanning power? COARSE ADJUSTMENT KNOB

Scientist who observed “animalcules”, also known as bacteria and protozoan. Van LEEUWENHOEK

Supports the body tube and stage; used to carry the microscope. ARM

Statements about cells that apply to all living things developed with use of the microscope. CELL THEORY

Which adjustment knob should be used while on high power? FINE ADJUSTMENT KNOB

Scientist who observed the first cells and came up with the word ‘cells’. HOOKE

Located on the stage, holds the slide in place. STAGE CLIPS (SLIDE CLIPS)

The name for a microscope with one ocular lens (eyepiece). MONOCULAR

Scientist who studied plant cells and helped contribute to the ‘Cell Theory’. SCHLEIDEN

COARSE ADJUSTMENT KNOB Moves the stage up and down for focusing an image; used first when focusing the specimen. COARSE ADJUSTMENT KNOB

Term used to describe a microscope with two sets of magnifying lenses. COMPOUND

Moves the stage slightly to sharpen the focus of the image; used only with the higher power objective lenses. FINE ADJUSTMENT KNOB

Scientist who studied animal cells and helped contribute to the ‘Cell Theory’. SCHWANN

Provides electricity in order to operate the microscope. POWER SWITCH

A tool used to view small objects that cannot be easily seen by the naked eye. MICROSCOPE

Holds the objective lenses and allows them to be rotated during use. NOSEPIECE

This term is used to describe a microscope that remains focused on high power once focused on scanning power. PARFOCAL

Magnifying lenses located closest to the specimen being viewed. OBJECTIVE LENSES

The white circle you see when you look through the eyepiece with the light turned on. FIELD OF VIEW (VIEWING CIRCLE)

Allows light to go through the stage, specimen, and the lenses to your eye. STAGE OPENING (APERTURE)

What is the formula used to calculate total magnification? OCULAR LENS x THE OBJECTIVE LENS IN USE (ex. 10x times 40x = 400x)

Supports the slide being viewed; should be all the way up before first focusing the specimen. STAGE

Scientist given credit for developing the first microscope. JANSSEN

Regulates the amount of light allowed through the specimen and into the body tube. DIAPHRAGM

(NOT THROUGH THE EYEPIECE) Where should you look when changing from the scanning power to a higher power? TO THE SIDE OF THE STAGE (NOT THROUGH THE EYEPIECE)

Provides light necessary to view the specimen. LAMP (LIGHT SOURCE)

Supports the weight of the entire microscope; used to carry the microscope. BASE

Which objective lens provides the greatest field of view? SCANNING