Solar Motion

Do parallel rays incident on a parabolic mirror meet at a pt. even if they’re nt parallel to the prncpl axis?

I’m designing a mechanism on a parabolic solar collector for tracking the solar motion. Just wanted some help with the geometry of reflecion frm a parabolic collector at diff angles of incidence

I haven’t done any math to prove it, but my intuition is saying that a non-axial refection from a parabolic mirror results in a (curved?) focal line instead of a focal point.

Solar Motion – Monkey

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