Gear
A gear is a rotating machine part having cut teeth, or cogs, which mesh with another toothed part in order to transmit torque. Two or more gears working in tandem are called a transmission and can produce a mechanical advantage through a gear ratio and thus may be considered a simple machine. Geared devices can change the speed, torque, and direction of a power source. The most common situation is for a gear to mesh with another gear, however a gear can also mesh with a non-rotating toothed part, called a rack, thereby producing translation instead of rotation.
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Famous quotes containing the word gear:
“For women ... bras, panties, bathing suits, and other stereotypical gear are visual reminders of a commercial, idealized feminine image that our real and diverse female bodies can’t possibly fit. Without these visual references, each individual woman’s body demands to be accepted on its own terms. We stop being comparatives. We begin to be unique.”
—Gloria Steinem (b. 1934)
“But Lord, remember me and mine
Wi’ mercies temporal and divine!
That I for grace and gear may shine,
Excelled by nane!
And a’ the glory shall be thine!
Amen! Amen!”
—Robert Burns (1759–1796)