Reversing Direction Of Propagation Of The Ray
Reversing direction of propagation of the ray:
graph TD;
A[Reversing direction of propagation of the ray:];
A --> B[Concept 1];
A --> C[Concept 2];
B --> D[Sub-concept 1];
C --> E[Sub-concept 2];
D --> F[Detail 1];
E --> G[Detail 2];
