TEM ray diagrams – V1.0

This webpage presents the originally published (V1.0) TEM ray diagrams with the condenser aperture at the level of the C2 lens. While this usefully describes ray selection by the condenser aperture and is aesthetically pleasing, it is less physically realistic than placing the aperture below the C2 lens, as done in the updated ray diagrams.

TEM Ray Diagrams @ 2025 by Duncan T.L. Alexander are licensed under CC-BY 4.0.