"A ray of light that goes from point P1 to point P2, suffering any number of reflections on flat mirrors, in the same medium, has a smaller path length than any nearby path" (HERON'S Principe of Reflection) ----> Change the position of P2 --->Click and drag the red dot to change the direction of the mirror AB ----> Change the position of the dot M on plane mirror ----> Press space to create the graph (Path, x=AM) ----> Verify the "Heron's Principe of Shortest path" ----> Verify that the the time in the path P1M+MP2 is minimum by clicking the white dot P1.
Shared from Scratch 2 Offline Editor Hero (or Heron) of Alexandria (c. AD 10–70) was an ancient Greek mathematician and engineer who was active in his native city of Alexandria,Roman Egypt
