The Silver Rhombus
An OTC with a silver rhombus. The colour effect is due to an inserted extra paper.
A silver rectangle, aspect ratio 1 to sqrt (2) happens to have almost the same dimensions as requested for the OTCs. The error is only about 1%.
A silver rectangle, aspect ratio 1 to sqrt (2) happens to have almost the same dimensions as requested for the OTCs. The error is only about 1%.
