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Comparing ray/doc/materials.1 (file contents):
Revision 1.1 by greg, Tue Mar 11 19:20:20 2003 UTC vs.
Revision 1.2 by greg, Mon Sep 20 17:32:04 2004 UTC

# Line 318 | Line 318 | bold rho sub d ~=~ bold p^bold C (1 ~-~ a sub 4 )
318   .EQ I
319   bold rho sub si ~=~ left {~ lpile {{bold r sub s
320    {f sub s ( q hat sub i )} over
321 <  sqrt{( q hat sub i cdot n hat sub p ) cos sub 1}} above
321 >  ( q hat sub i cdot n hat sub p ) cos sub 1} above
322    0 } ~~~ lpile { {if~a sub 5 >0} above otherwise }
323   .EN
324   .EQ I
# Line 376 | Line 376 | bold rho sub d ~=~ bold p^bold C^(1 ~-~ a sub 4 ) ( 1
376   .EQ I
377   bold rho sub si ~=~ left {~ lpile {{bold r sub s
378    {f sub s ( q hat sub i )} over
379 <  sqrt{( q hat sub i cdot n hat sub p ) cos sub 1}} above
379 >  ( q hat sub i cdot n hat sub p ) cos sub 1} above
380    0 } ~~~ lpile { {if~a sub 5 >0} above otherwise }
381   .EN
382   .EQ I
# Line 395 | Line 395 | bold tau sub d ~=~ a sub 6 (1~-~bold r sub s ) (1~-~a
395   .EQ I
396   bold tau sub si ~=~ left {~ lpile {{a sub 6 a sub 7 (1~-~bold r sub s )^
397    bold p^bold C {g sub s ( q hat sub i )} over
398 <  sqrt{(- q hat sub i cdot n hat sub p ) cos sub 1}} above
398 >  (- q hat sub i cdot n hat sub p ) cos sub 1} above
399    0 } ~~~ lpile { {if~a sub 5^>^0} above otherwise }
400   .EN
401   .EQ I

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