What are they basically? I know they're introduced during electron microscopy, but how exactly? & what effect do they have on your specimen? Do they make it unclear...?
Artefacts are very common and virtually impossible to eliminate. They basically look like a 'splodge' on the specimen lol. So if you are going to produce a photomicrograph, you just move around the specimen to find an area that doesn't have any artefacts.
I got to play with a SEM for an hour or so last term and it was great fun! The new ones are all computer controlled and so easy to use!