Abrasion Marks: Marks on the emulsion surface of a film, caused by scratching. It can be due to traces of dirt trapped between layers of film as it is wound on the spool, or to grit on the pressure plate.

 

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Abrasion Marks: Marks on the emulsion surface of a film, caused by scratching. It can be due to traces of dirt trapped between layers of film as it is wound on the spool, or to grit on the pressure plate.

Ripple Marks: A series of parallel or sub-parallel ridges in sand or sediment that is caused by the rhythmic or directional movement of wind or water.

Pre-Trade Benchmarks: Prices occurring before or at the decision to trade.

Post-Trade Benchmarks: Prices after the decision to trade.

Static Marks: Jagged fog marks on negatives as a result of a very dry film being rewound or unwound too rapidly.

Stress Marks: Black lines on a photographic emulsion caused by friction or pressure.

Surge Marks: Streaks on the image from each of the sprockets holes of 35mm film caused by excessive agitation.

Stretch Marks: Tears (slight scars) in skin caused if muscle or fat tissue has expanded in volume faster than the skin can grow.

Oscillation Ripple Marks: Symmetrical ridges in sand or other sediment that are caused by a back-and-forth wave action.

Guide Marks (Line): An aid to finding start of 2 or 3 steps for ball delivery. Most approaches have guide lines (commonly at 8 feet 2 inches and 11 feet 6 inches before the foul line; formed by 1 inch spots, 8½ . . . View Full Definition