Microscopy Flashcards
(17 cards)
Platform where the slide is positioned with the clips to hold it in place
Stage
Reflects light up through the slide to the eyepiece
Mirror
Concentrates the rays of light and directs them into object being used
Condensor
The lens the the operator looks through
Ocular Lens
Tube that the eyepiece and nosepiece are attached to
Body Tube
Moves the body tube up and down for focusing (coarse and fine)
Adjustment knobs
Lenses used to see the detail of the specimen (scanning, low power or high power)
Objectives
Can be adjusted like a camera shutter to control light passing through the object and the body tube
Diaphragm
Supports and stabilises the microscope
Base
Holds the body tube and can be used as a handle for holding the microscope when carrying
Arms
The magnification on the ocular lens is
10x
Magnification on Scanning Objective is __
Magnification on Low Power Objective is __
Magnification on High Power Objective is __
4x
10x
40x
What is the total magnification for each lens? (Multiply the ocular lens by the objective lens)
Scanning __
Low Power __
High Power __
40x
100x
400x
How do you make the specimen appear the brightest and the darkest?
Brightest: Turn Anti-clockwise
Darkest: Turn Clockwise
Why is it important to consider depth of field when looking at a tissue specimen?
As you increase magnification the depth of field is reduced, which is why you have to be mindful of specimen placement
What measurements are used to measure magnification?
Metres: m Centimetres: cm Millimetres: mm Micrometres: um Nanometres: nm
1 metre=
1 cm=
1 mm=
1 um=
100 cm
10 mm
1000 um
1000 nm