International
Tables for
Crystallography
Volume B
Reciprocal space
Edited by U. Shmueli

International Tables for Crystallography (2010). Vol. B, ch. 2.5, p. 367   | 1 | 2 |

Figure 2.5.6.1 

B. K. Vainshteinc and P. A. Penczekg
[Figure 2.5.6.1]
Figure 2.5.6.1

A three-dimensional object [\varphi_{3}] and its two-dimensional projection [\varphi_{2}]. The electron beam penetrates the specimen in the direction of the z axis.