RP 1- microscopes Flashcards
1
Q
how do you calculate magnification (lenses)
A
magnification = eyepiece lens x objective lens
2
Q
how do you calculate magnification (images) ?
A
magnification = size of image / size of actual object
3
Q
what does the stage do ?
A
where the slide is placed and has clips to hold the slide
4
Q
why is there a lamp or mirror at the bottom ?
A
so light can go through the slide
5
Q
what magnification does the eyepiece lens have ?
A
10x
6
Q
what magnification does the objective lens have ?
A
4x, 10x, 40x
7
Q
how do you set a microscope up ?
A
- set the objective lens to the lowest
- turn the coarse focus so it almost touches the slide- look at is side ways
- look through eyepiece and adjust coarse focus
- use the fine focus to get a clear focus
8
Q
what’s the differences between a light and an electron microscope ?
A
light has limited magnification and resolution but electron has both greater
9
Q
where is the coarse focussing dial ?
A
at the top
10
Q
where is the fine focussing dial ?
A
at the bottom
