microscopy

Cards (10)

what is magnification 
the number of times bigger an image appears compared to the real size of the object
what is resolution 
ability to distinguish between two points
how does a light microscope work
passes a light beam through a specimen and creates a magnified image using lenses
advantages of light microscopes
inexpensive, easy to use, portable and observe both dead and living specimen
disadvantages of light microscopes
lower magnification and resolution
how does an electron microscope work
passes electrons through a specimen and creates a magnified image using lenses
advantages of electron microscopes
higher magnification and resolution
disadvantages of electron microscopes
expensive, less portable, only observe dead specimen and require training to use
what is the formula for magnification
magnification = image size / real size
what is the role of a stain in microscopy
highlight cell structures