Americana

GemCad Ray Traces for RI = 1.64
Random Model	Cosine Model	ISO Model

Americana Designed by Charles W. Covill covill@email.msn.com
Angles for R.I. = 1.64	81 facets + 16 facets on girdle = 97
4-fold, mirror-image symmetry	96 index
L/W = 1.000 T/W = 0.550 T/L = 0.550 P/W = 0.539 C/W = 0.174	H/W = (P+C)/W+0.02 = 0.733 P/H = 0.735 C/H = 0.237
Vol./W^3 = 0.296	Brightness at 0 degrees tilt for RI = 1.64 COS = 53.6 ISO = 61.6

Pavilion
1	43.00	03-09-15-21-27-33-39-45- 51-57-63-69-75-81-87-93
2	90.00	06-18-30-42-54-66-78-90
3	48.00	05-19-29-43-53-67-77-91
4	55.00	01-23-25-47-49-71-73-95
5	90.00	01-23-25-47-49-71-73-95
Crown
1	45.00	01-23-25-47-49-71-73-95
2	46.00	06-18-30-42-54-66-78-90
3	42.00	96-24-48-72
4	31.00	96-24-48-72
5	35.18	11-13-35-37-59-61-83-85
6	28.00	01-23-25-47-49-71-73-95
7	26.08	06-18-30-42-54-66-78-90
8	0.00	Table

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