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Target Diamond Structural Analysis (view source)
Revision as of 15:32, 5 March 2009
, 15:32, 5 March 2009no edit summary
Because all three waves are reflections of the same original wave, they all have the same amplitude and frequency.
Because all three waves are reflections of the same original wave, they all have the same amplitude and frequency.
To find the thickness of the diamond, we only need the first two waves. Although later all three waves will be inexorably tied together, we can begin with only two.
The combined wave equation is unimportant, since we only record its amplitude, which is
<math>A^2 _{total} = A^2 _1 + A^2 _2 + 2 A _1 A _2 \cos ( d _2 - d _1 ) </math>
=
<math>A^2 _{total} = 2 A^2 + 2 A^2 \cos ( d _2 - d _1 ) </math>
=
<math>A^2 _{total} = 2 A^2 (1 + \cos ( d _2 - d _1 ) </math>