Figure 12. Beams coming from the focus of the hyperbola and reflected to the other branch of the hyperbola as if they were coming from the branch of this branch

From

The Experimental Teaching of the Conics Using the Reflection of the Light: The Conceptual Study of the Cassegrain Telescope

Juan Carlos Ruiz Mendoza

American Journal of Educational Research. 2019, 7(10), 699-707 doi:10.12691/education-7-10-5