Light microscope - relatively long wavelength of light rays means can only distinguish between objects 0.2micrometre's apart.
Using beams of electrons = shorter wavelengths, can distinguish between objects as 0.1nm apart.
- km = kilometre = 1000 metres
- micrometre = um = 10-6 metres
- nanometre = nm = 10-9 metres
Magnification and Resolution
Material put under microscope = object.
Magnification = size of image/size of object
Size of image = magnification x size of object.
Sizes need to be in the same unit - may have to convert units.
NB: Light has longer wavelength than beam of electrons, not light microscope has longer wavelength than electron microscope.
Resolution = minimum distance apart two objects can be in order to appear as seperate items.
Resolving power depends on the wavelength or form of radiation used.