Arc may refer to:
Computing and gaming
Engineering
- Arc chute, a protective device in an electrical circuit breaker
- Arc lamp, a device that produces light by an electric arc
- Arc welding, a method of welding that uses an electric arc to melt the metals together
- Electric arc or voltaic arc, an ongoing plasma discharge (an electric current through a gas), producing light and heat
- Arc or arch, a bowed or curved structure capable of spanning a space while supporting significant weight
Geography
Modern culture
Mathematics
Optics
- 120° parhelion, relatively rare halo, an optical phenomenon occasionally appearing along with very bright sun dogs
- Infralateral arc, a rare halo, an optical phenomenon appearing similar to a rainbow under a white parhelic circle
- Lower tangent arc, rarely observable halo, an optical phenomenon appearing under and tangent to a 22° halo centred around the sun
- Parry arc, a rare halo, an optical phenomenon which occasionally appears over a 22° halo together with a upper tangent arc
- Subhelic arc, a rare halo that curves upwards from the horizon and touches the tricker arc above the anthelic point
- Supralateral arc, a rare halo, an optical phenomenon often confused with the indeed infrequently appearing 46° halo
- Upper tangent arc, halo, an atmospheric optical phenomenon which appears over and tangent to the 22° halo centred around the sun
Other
See also
