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C
CHECK
Opposite of Build; a smooth diminishment of light or sound level.
CHIAROSCURO
In Lighting or Scenic design (and the Art world), Chiaroscuro means the use
of contrasts of light and shade, especially in order to enhance the
depiction of character and for general dramatic effect. Many painters are
said to be masters of Chiaroscuro (especially Rembrandt, Caravaggio etc.)
From the Italian words chiaro 'clear, bright' and oscuro 'dark'.
CHIEF ELECTRICIAN
The senior member of the theater's stage lighting team, although not
necessarily the lighting designer. Known in the US as MASTER ELECTRICIAN.
In common with many theater jobs, the actual duties of the Chief Electrician
vary from theater to theater. Some chiefs are responsible for electrical
maintenance of the building, some design the lighting for nearly every
in-house production, some design no lighting at all, some have a team of
eight staff under them, some have two. Many theaters employ casual staff to
assist on lighting rigging sessions. Some theaters have a separate sound
department, smaller venues have the lighting team also running sound for
shows (and doing sound design for some).
CHINAGRAPH PENCIL
Usually white, wax-based pencil used for marking magnetic tape prior to
splicing. Also used for marking identifying numbers on lighting gels.
CHOPPERS
Two horizontal masking shutters used in followspots to shape the beam above
and below.
CID
(Compact Iodide Daylight) A high intensity discharge lamp that produces a
light similar in color temperature to daylight approx. 5500K). A 1000W CID
lamp produces 2.5 times more light than a 2000W tungsten halogen source.
CIE
(Commission Internationale d'Eclairage) International lighting forum which
has produced a series of universally recognized symbols for lighting plans.
CIRCLE FRONTS
A permanent front of house lighting position in older proscenium theaters. A
number of spotlights, sometimes fitted with color changers, are recessed
into the front of the circle balcony above the stalls. Sometimes known as
the Balcony Rail position.
CIRCUIT
1) The means by which a lantern is connected to a dimmer or patch panel.
Numbered for reference.
2) A complete electrical "loop" around which current can flow.
CIRCUIT BREAKER
An electro-mechanical "fuse" that can be reset, rather than having to be
replaced. Available in the same ratings as fuses.
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