posted on Apr, 13 2012 @ 03:01 AM
Originally posted by longjohnbritches
reply to post by Illustronic
A lazar can be bounced of the moon no reflector nessessary.
Quicker also. The reflector can move and screw up the readings. moot
Wrong, radar can be bounced off the moon for measuring distance but due to the spread of the radar and the lunar topography it is not nearly as
accurate as laser reflection from the mirrors, and yes you need the mirrors for that. An older and even less accurate means of measuring distances is
the parallax, or triangulation method but that is dubious as other measurements need to be known to get any figures, inaccuracies with this method can
be at magnitudes of earth diameter inaccurate, radar as much as 300 meters inaccurate, laser within 3 centimeters accurate.
What do you mean the mirrors move? Tidal, lunar rotation, earth reflecting point rotation, plate tectonics? How much movement takes place in 2 and a
half seconds? You think this isn't accounted for? There is nothing on the moon to move the mirrors in the nano second the light hits it, conclusion,
About the quicker comment, an average radar distance method can take months to measure, laser less than 3 seconds. So you're wrong about that too.