Microscope Flashcards
Dutch Scientist who used a simple microscope to discover a whole new world of living organisms.
Anton van Leeuwenhoek
English scientist who discovered the “cells”
Robert Hooke
The microscope part that is closest to your eye. Image magnified 10x.
Eyepiece / Ocular
Microscopes with 2 oculars.
Binocular Microscope
Holds the ocular in place.
Body Tube
Located at the bottom of the body tube.
Revolving Nosepiece
Lens set that are attached to the revolving nosepiece.
Objectives
Different types of Objectives
Scanning objectives
Low-powered objectives
High-powered or High-dry objectives
Higher-oil or Oil immersion objectives
Objective used for the initial location of the specimen.
Scanning objectives
Objective used for observing specimen that does not need greater magnification
Low-powered objectives
Objective used for requiring greater magnification. The objectives called “dry” cause it does not use oil.
High-powered or High-dry objectives
Objective used for extremely small specimen.
Higher-oil or Oil immersion objectives
Magnification and color of scanning objectives
-4x RED
Magnification and color of low-powered objectives
-10x YELLOW
Magnification and color of high-powered or High-dry objectives
-40x BLUE
Magnification and color of higher-oil or Oil immersion objectives
-100x WHITE
Usually mounted on a clean glass slide
Specimen
Specimens are rested here
Stage
Specimens are held in place by this
Mechanical Stage Clip
Has a hole so that light can pass through the specimen from below.
Stage
Adjustable bracket that can move the slide around mechanically
Position Knobs
Located below the stage.
Lamp
Travel of light from lamp to the eye
Light rays from the LAMP travel through the hole in the STAGE to the SPECIMEN then through the OBJECTIVES and OCULAR to the EYE
Lens located in between the lamp and the stage
Condenser
Concentrates the light coming from the lamp.
Condenser
Light intensity could be adjusted by adjusting this
Diaphragm
Types of diaphragm
Iris Diaphragm
Disk Diaphragm
Rotating disk with holes of different diameters.
Disk Diaphragm
Made of overlapping silver metal in a circular pattern resembling the iris of the eye.
Iris Diaphragm
Entire upper assembly or parts of microscope are held up by?
Arm
A square or horseshoe-shaped part that supports the whole microscope
Base
Types of Adjustment Knobs
Course-Focus / Adjustment Knob
Fine-Focus / Adjustment Knob
Changes the distance between the stage and objectives in great increments or distances.
Course-Focus / Adjustment Knob
Changes the distance between the stage and objectives in small increments or distances.
Fine-Focus / Adjustment Knob
Knobs found in the ARM
Adjustment Knobs
When did Anton van Leeuwenhoek used a SIMPLE MICROSCOPE?
In the 17th century
How many lens does a SIMPLE MICROSCOPE contain?
One
Larger organisms had small microscopic subunits called?
Cells
True or False
Binocular Microscope is for people with slightly different focusing on the left and right eye.
True
True or False
Although called tube, Body Tube may sometimes look like a box at some models
True
Circular mechanism that rotates so that different lenses can be selected.
Revolving Nosepiece
True or False
For easier access when rotating the nosepiece, push on the lens barrels
False
Always rotate on the outside of the revolving disk and never push the lens barrels
True or False
Each objective have the same magnifying factors
False
Each objective have different magnifying factors
True or False
All oculars have -x10 magnifying factors
False
-x5 and -x10
Could be adjusted by using the DIAPHRAGM
Light Intensity
