SEM and TEM are electron microscopes whereas the SEM uses reflected electrons and TEM uses transmitted electrons to form an image
Explanation:
SEM is the scanning electron microscopes and TEM is the Transmission electron microscope
SEM works by detecting the scattered electrons to create an image of the sample whereas the TEM detects the transmitted electrons to create the image of the sample
SEM will only be analysing the surface of the sample whereas TEM collects data vertically also
TEM sample needs to cut thinner than SEM and TEM will give high-resolution images than SEM
