Refracting Telescopes (P1.2)

Refracting Telescopes

• Light travels in straight lines
• It can change direction when it moves into a different material
• The change in direction is called REFRACTION
• It changes direction at an INTERFACE (boundary) between 2 materials
• A line at right angles to the interface is called the NORMAL line
• In a REFRACTING TELESCOPE, a convex lens…