electron microscopes and cell details 0.0 / 5 ? BiologyUNIT 1ASSQA Created by: Imogen MaytumCreated on: 12-11-13 18:34 Transmission electron microscopes (TEM) -The electron BEAM passes through a very THIN PREPARED SAMPLE. -Electrons pass through the DENSER parts of the sample LESS EASILY, so giving some contrast. -The final image produced is 2D (two dimensional). -The magnification possible is x500 000. 1 of 2 Scanning electron microscope (SEM) -The electron beam is directed onto a SAMPLE. -The electrons DON'T pass through the specimen. -They are 'BOUNCED OFF' the sample. -The final image produced is 3D (three dimensional). -The magnification possible is x100 000. 2 of 2
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