B1: Microscopy Flashcards
1
Q
light microscopes
A
uses light and lenses to form an image of a specimen
2
Q
electron microscopes
A
uses a beam of electrons instead of beams or rays of light/has a higher magnification and resolution
3
Q
resolution
A
ability to distinguish between two points
4
Q
formula for magnification
A
magnification= image size/real size
5
Q
why is iodine solution used
A
to highlight organelles in a cell by adding colour them
6
Q
centimetre to metres
A
10^-2
7
Q
millimetre to metres
A
10^-3
8
Q
micrometre to metres
A
10^-6
9
Q
nanometre to metres (standard form)
A
10^-9
10
Q
how to increase magnification
A
swap to a higher-powered objective lens and refocus
11
Q
adjusting focus
A
use coarse and fine-adjustment knob
