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An electric arc (or arc discharge) is an electrical breakdown of a gas that produces a prolonged electrical discharge. The current through a normally...

A circumhorizontal arc is an optical phenomenon that belongs to the family of ice halos formed by the refraction of sunlight or moonlight in plate-shaped...

Look up arc, arc-, or arcs in Wiktionary, the free dictionary. Arc may refer to: Arc (geometry), a segment of a differentiable curve Circular arc, a segment...

The circumzenithal arc, also called the circumzenith arc (CZA), the upside-down rainbow, and the Bravais arc, is an optical phenomenon similar in appearance...

Joan of Arc (French: Jeanne d'Arc [ʒan daʁk]; Middle French: Jehanne Darc [ʒəˈãnə ˈdark]; c. 1412 – 30 May 1431) is a patron saint of France, honored...

An arc lamp or arc light is a lamp that produces light by an electric arc (also called a voltaic arc). The carbon arc light, which consists of an arc between...

volcanic arc (also known as a magmatic arc: 6.2 ) is a belt of volcanoes formed above a subducting oceanic tectonic plate, with the belt arranged in an arc shape...

the Sun rises over 29–32°, the upper tangent arc unites with the lower tangent arc to form the circumscribed halo. The lower tangent arc is rarely observable...

The Arc de Triomphe de l'Étoile, often called simply the Arc de Triomphe, is one of the most famous monuments in Paris, France, standing at the western...

a dramatic arc. On a television program, for example, the story would unfold over many episodes. In television, the use of the story arc is common in...

Paul Graham announced that he was working on a new dialect of Lisp named Arc. Over the years since, he has written several essays describing features or...

An electric arc furnace (EAF) is a furnace that heats material by means of an electric arc. Industrial arc furnaces range in size from small units of approximately...

aurora australis) Belt of Venus Brocken Spectre Circumhorizontal arc Circumzenithal arc Cloud iridescence Crepuscular rays Earth's shadow Earthquake lights...

atmosphere. Halos can have many forms, ranging from colored or white rings to arcs and spots in the sky. Many of these appear near the Sun or Moon, but others...

it detects the electric arcs that are a signature of loose connections in home wiring. Loose connections, which can develop over time, can sometimes become...

Sun dog Tangent arc Tyndall effect Upper-atmospheric lightning, including red sprites, Blue jets, and ELVES Water sky "Belt of Venus over Cerro Paranal"...

Arc welding is a welding process that is used to join metal to metal by using electricity to create enough heat to melt metal, and the melted metals,...

A minute of arc, arcminute (arcmin), arc minute, or minute arc, denoted by the symbol ′, is a unit of angular measurement equal to 1/60 of one degree....

is found in most printed material, and consists of a small loop with an arc over it. Both derive from the majuscule form ⟨A⟩. In Greek handwriting, it was...

An arc flash is the light and heat produced as part of an arc fault (sometimes referred to as an electrical flashover), a type of electrical explosion...