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Micro Ch 2
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Lenes & bending light
light is bent when pasing from one medium to another
Refractive index
measure of how substance slows the velocity of light
focal point
focuses light in specific place
focal length
distance between center of lens & focal point
4 Types of Light Microscope
1.) bright-field
2.) dark-field
3.) phase contrast
4.) flourescence
Bright field
dark objects
bright background
parfocal
parfocal
objets remain in focus when objectives are changed
Apperature
amt of light that passes through apperture of lens
resolution
ability of lens to distinguish 2 points
working distance
distance b/w front cover of lens and surface cover of specimen
Phase contrast
used to examine organisms that would be damaged by attaching them to slides
scanning
external surface prosuces 3d structure
transmission
see through to inside of speciment
basic stain
reacts w/acidic (-) part of the cell
acid fast bacteria
resistant to stain due to waxy material of antibodies
Author
Khristalinrene
ID
63303
Card Set
Micro Ch 2
Description
Test 1
Updated
2011-02-04T02:39:37Z
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