Null Effect of Scratches Made by Curling Rocks Affecting the Motion of Other Curling Rocks

First Rock Curls Left Before Scratches

This rock curls to the left. This shot was BEFORE scratches were made. Compare this to the first rock curling left AFTER scratches were made. Blue rocks were used for all shots curling to the left.

Second Rock Curls Left Before Scratches

This rock curls to the left. This shot was BEFORE scratches were made. Compare this to the second rock curling left AFTER scratches were made.

Third Rock Curls Left Before Scratches

This rock curls to the left. This shot was BEFORE scratches were made. Compare this to the third rock curling left AFTER scratches were made.

First Rock Curls Right Before Scratches

This rock curls to the right. This shot was BEFORE scratches were made. Compare this to the first rock curling right AFTER scratches were made. Yellow rocks were used for all shots curling to the right.

Second Rock Curls Right Before Scratches

This rock curls to the right. This shot was BEFORE scratches were made. Compare this to the second rock curling right AFTER scratches were made.

Third Rock Curls Right Before Scratches

This rock curls to the right. This shot was BEFORE scratches were made. Compare this to the third rock curling right AFTER scratches were made.

First Set of Scratches

Scratches were made at roughly 45 degrees, diagonally across the sheet of ice. The entire area of the sheet where rocks will move was covered by scratches. This video shows only part of the process where scratches were made.

Second Set of Scratches

Scratches were made at roughly 45 degrees, diagonally across the sheet of ice. The entire area of the sheet where rocks will move was covered by scratches. By making these scratches we doubled the number of scratches on the sheet of pebbled ice. This video shows only part of the process where scratches were made.

First Rock Curls Left After Scratches

This rock curls to the left. This shot was AFTER all of the scratches were made. Compare this to the first rock curling left BEFORE scratches were made. Blue rocks were used for all shots curling to the left.

Second Rock Curls Left After Scratches

This rock curls to the left. This shot was AFTER all scratches were made. Compare this to the second rock curling left BEFORE scratches were made.

Third Rock Curls Left After Scratches

This rock curls to the left. This shot was AFTER all scratches were made. Compare this to the third rock curling left BEFORE scratches were made.

First Rock Curls Right After Scratches

This rock curls to the right. This shot was AFTER all scratches were made. Compare this to the first rock curling right BEFORE scratches were made. Yellow rocks were used for all shots curling to the right.

Second Rock Curls Right After Scratches

This rock curls to the right. This shot was AFTER all scratches were made. Compare this to the second rock curling right BEFORE scratches were made.

Third Rock Curls Right After Scratches

This rock curls to the right. This shot was AFTER all scratches were made. Compare this to the third rock curling right BEFORE scratches were made.