Graphic depiction of a single line set and the parts of a counterweight system. (A) Hoisting cables, (B) Turnbuckles, (C) Purchase line, (D) Arbor rod, (E) Spreader plates, (F) Cut steel counterweight, (G) Locking safety ring, (H) Rope stop/lock (brake)/Lock rail, (I) Tension sheave (block)
Fresnel spotlight
ellipsoidal spotlight
cyc(lorama) strip lights
Types of Lamps Incandescent will change color temp with age Quartz Halogen maintains stable color temp HID – halide iodide discharge HMI – hydragyrum medium arc-length iodide
Color Temperatures 1700 K Match flame 1850 K Candle flame 2800–3300 K Incandescent light bulb 3350 K Studio "CP" light 3400 K Studio lamps, photofloods, etc K Moonlight, xenon arc lamp 5000 K Horizon daylight 5500–6000 K Typical daylight, electronic flash 6500 K Noon daylight 9300 K CRT screen
Colors Physical Primary Colors – Red – Yellow – Blue Physiological Primary Colors – Red – Blue – Green
Controllable Qualities of Lighting Intensity Color Distribution Movement