Glowing Brake Disc

Disc brake

A disc brake is a type of brake that uses the calipers to squeeze pairs of pads against a disc to create friction. There are two basic types of brake pad friction mechanisms: abrasive friction and adherent friction. This action slows the rotation of a shaft, such as a vehicle axle, either to reduce its rotational speed or to hold it stationary. The energy of motion is converted into heat, which must be dissipated to the environment. Disc brakes are found in most automobiles and are more expensive to manufacture than a drum brake. Disc brakes are also found on some higher-end bicycles.

Phosphorescence

Phosphorescence is a type of photoluminescence related to fluorescence. When exposed to light (radiation) of a shorter threshold wavelength, a phosphorescent substance will glow, absorbing the light and reemitting it at a longer wavelength. Unlike fluorescence, a phosphorescent material does not immediately reemit the radiation it absorbs. Instead, a phosphorescent material absorbs some of the radiation energy and reemits it for a much longer time after the radiation source is removed.

Brake

A brake is a mechanical device that inhibits motion by absorbing energy from a moving system. It is used for slowing or stopping a moving vehicle, wheel, axle, or to prevent its motion, most often accomplished by means of friction.

glowing

Verb

1. present participle and gerund of glow

Noun

1. The action of glowing.

brake

Noun

1. A device used to slow or stop the motion of a wheel, or of a vehicle, usually by friction (although other resistive forces, such as electromagnetic fields or aerodynamic drag, can also be used); also, the controls or apparatus used to engage such a mechanism such as the pedal in a car. .mw-parser-output .defdate{font-size:smaller}
2. The act of braking, of using a brake to slow down a machine or vehicle

Verb

1. To operate a brake or brakes.
2. To be stopped or slowed (as if) by braking.

disc

Noun

1. A thin, flat, circular plate or similar object.
2. An intervertebral disc.

Verb

1. To harrow with a disc harrow.
2. To move towards, or operate at, zero blade pitch, orienting the propeller blades face-on to the oncoming airflow and maximizing the drag generated by the propeller.