electron microscopes (1.1.3) Flashcards
(10 cards)
define resolution
the smallest distance between two points that can be seen as seperate entites
what does a TEM microscope do
(transmission electron microscope)
produces the most magnified images
what does a SEM microscope do
(scanning electron microscope)
produce 3D images of the surface
maximum resolution
(light + electron microscopes)
light- up to 0.2 μm
electron- up to 0.1nm
magnification
(light + electron microscopes)
light- up to x2000
electron- up to x2000000
specimens living or dead
(light + electron microscopes)
light- living
electron- dead
staining needed
(light + electron microscopes)
light- no
electron- yes
image 2D or 3D
(light + electron microscopes)
light- 2D
electron- SEM- 3D
TEM- 2D
image color
(light + electron microscopes)
light- color (with stain)
electron- black + white (color can be added later)
cost
(light + electron microscopes)
light- cheap
electron- expensive
