Groove Geometry Efficiency Calculation

 
Introduction

Given the surface absorption rate, this page presents a method of calculation to determine the efficiency at a number of groove internal angles based on the number of reflections dictated by that angle.

The following C program performs these calculations and displays the interior angle, number of reflections, and percentage of incident light absorbed:


C:/usr/mrd/c> angles 10%

Absorption rate: 10.00%

 int   nr   percent
angle  ref  absorbed
-----  ---  --------
 180     1  10.00000
  90     2  19.00000
  60     3  27.10000
  45     4  34.39000
  36     5  40.95100
  30     6  46.85590
  20     9  61.25795
  18    10  65.13216
  15    12  71.75705
  12    15  79.41089
  10    18  84.99054
   9    20  87.84233
   6    30  95.76088
   5    36  97.74716
   4    45  99.12720
   3    60  99.82030
   2    90  99.99238
   1   180 100.00000
Download executable MS-DOS version

Copyright © 2009 Morris R Dovey

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