Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
14 Cards in this Set
- Front
- Back
- 3rd side (hint)
|
How many lenses in a microscope?
|
2 lenses
|
|
|
|
How many times can a light microscope magnify an image?
|
1000x
|
|
|
|
How much more powerful is an electon microscope?
|
1 nanometer
|
my nickname...
|
|
|
How does a light microscope magnify an image?
|
-bends the light rays from an object
-focusing them to form an image of the object. |
2 steps...
|
|
|
Magnification
|
The degree to which the image of a specimen is enlarged
|
larger...
|
|
|
Resolving Power
|
How well specimen detail is preserved during the magnifying process
|
detail...
|
|
|
Contrast
|
Ability to see specimen detail against its background (stains/dyes added to increase contrast)
|
background...
|
|
|
Ocular lens
|
the upper lens/eyepiece viewer looks for. It focuses the light on the retina of the eye.
|
|
|
|
Objective lens
|
The lenses in a microscope closest to the specimen. 3 or 4--40x,100x,400x.
|
|
|
|
Diaphragm
|
Regulates the amnount of light that goes through the specimen.
|
|
|
|
Fine Adjustment knob
|
small adjustments when focusing.
|
|
|
|
course adjustment knob
|
large adjustments when focosing (at scanning level)
|
|
|
|
parfocal
|
The ability of the microscope to remain in focus when switching from 1 objective lens to the next highest power.
|
|
|
|
What are the diameters?
|
40x= 4200 micrometers
100x= 1680 400x= 420 |
|
