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R
RETINA
A membrane lining the posterior part of the inside of the eye. It comprises
photoreceptors (cones and rods) that are sensitive to light and nerve cells
that transmit to the optic nerve the responses of the receptor elements.
RHEOSTAT
A resistance dimmer.
RIGGER
A technician chiefly responsible for the rigging for a tour or production.
RIGGING
The process by which scenery, truss, or other equipment is flown on aircraft
cable or chain.
ROAD CREW / ROADIES
Technical crew members who travel with a production on tour.
ROBOSCAN
A moving mirror automated fixture manufactures by Martin.
ROLLING RACK
A portable dimmer rack on casters for ease of transportation.
R & V
Reiche & Vogel. German manufacturers of low voltage beamlight. Now sometimes
used to describe any beamlight.
RADIO CONTROL
System whereby battery-powered practicals / props on stage can be
controllable from offstage with no connecting leads.
RAT STAND
Illuminated music stand.
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