The Mudcat Café TM
Thread #146907   Message #3406666
Posted By: beardedbruce
18-Sep-12 - 07:42 AM
Thread Name: BS: The Moon Landings: Real or Fake?
Subject: RE: BS: The Moon Landings: Real or Fake?
Sminky,

Look up "corner cube"

The reflected beam is returned parallel to the initial one, regardless of the initial angle ( within VERY broad limits.

From my years with GLTN on Crustal Dynamics, I can verify that they work.