microscopes Flashcards
1
Q
define magnification
A
how many times larger the image is than the object
2
Q
what is the equation for magnification?
A
image size/object size
3
Q
define resolution
A
the smallest distance 2 objects can be apart without seeming blurry
4
Q
give 3 pros of light microscopes
A
small
cheap
easy to use
5
Q
give a con of a light microscope
A
resolution is limited to 0.2 micro metres
6
Q
give 3 cons of electron microscopes
A
really big
expensive
hard to use
7
Q
give a pro of electron microscopes
A
very good resolution - max 0.1 nanometres (2000 times better than light microscopes)
8
Q
how much smaller is a nanometre to a micrometre?
a micrometre to a millimetre?
A
1,000
9
Q
give 1 reason why a student may not see cells while looking through an eyepiece
A
the microscope is not focused
