Expressed as ε, the involute roll angle is the angle whose arc on the base circle of radius unity equals the tangent of the pressure angle at a selected point on the involute.
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Famous quotes containing the words roll and/or angle:
“There is no question what the roll of honor in America is. The roll of honor consists of the names of men who have squared their conduct by ideals of duty.”
—Woodrow Wilson (1856–1924)
“So much symmetry!
Like the pale angle of time
And eternity.
The great shape labored and fell.”
—N. Scott Momaday (b. 1934)