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A Practical Guide to Stage Lighting Third Edition, 3rd Edition by Steven Louis Shelley

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Appendix A Support Information

These two pages are a summation of the Slinky Formula, Guidelines, and Calculations, as well as other calculations used in this book.

SLINKY FORMULAS

The Slinky Formula

•  Field Angle° ÷ 2 = Beam Angle°.

The Slinky Configuration

•  Every other pool at least touches each other’s edge.

•  Each pool at least bisects the adjacent pool of light.

The Slinky Method Guidelines

•  To provide proper overlap between two lights and achieve a smooth blend, the edge of the second beam should land in the middle of the first beam.

•  To properly plot straight washes, the ideal distance between each hung instrument should be approximately half of one beam pool width, either side-to-side for each zone, or up- and downstage between ...

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