microscopes Flashcards
(14 cards)
what is the purpose of microscopes?
to magnify objects
how does a light microscope work?
light shines up through a
specimen and through lenses, where it bends to make an
enlarged image
what is used to make organelles within cells appear clearer when using a microscope?
a stain
electron miscroscopes have. . . resolution and magnification than light microscopes
greater
which microscope is better for a scientist?
an electron miscroscope
state the definition of resolution/resolving power
the shortest distance between two points that can be seen as separate points
when was the first compound microscope developed?
1590s
when was the first electron microscope developed?
1930
when was the first light microscope created?
1670s
what is a disadvantage of electron microscopes?
expensive, image is usually in black and white
what is an advantage of light microscopes?
images are in colour, cheaper option
which microscope can sometimes produce 3D images?
electron
what would you do to adjust the microscope if the image is too blurry?
adjust the fine or coarse focus knob
what would you do to adjust the microscope if the image is too small?
move to a higher power (magnification) lens
