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706 RICHARDSON'S DLUEBOOK OF PROJECTION
Refraction, 184
angle of, 181. 214 Relays, 115, 121, 455 Resistance, electrical, 9-11
temperature effect, 10, 49, 50 Resistors, 77-82
ballast, 78-79, 140-141, 143
color code, 79-80
connections, 42-48 Resonance, 421
in niters, 435 Resultant, 36, 37 Retard coil, 82 Reverberation. 424 Rewinder, film, 265-266 Rheostats, 80-82 Root, square, 21-22 Rotary converters, 139 Rotary stabilizer, 469, 570, 571
Scanning (television) 629, 631 interlaced, 646 mechanical, 650-652 Schematic (diagram) 452
symbols, 219 Screens, projection, 225-245
aging. 227
beaded, 226
cleaning, 235
location, 238, 240-241
perforated, 236. 237
recoating, 244
sizes, 244
testing reflection power, 228 Series circuit, 41-48 Series-parallel circuit, 41-48 Series wound (generator or motor) 135 Shirt circuit, 18-19 Shunt circuit, 41
Shunt-wound (generator or motor) 135 Shutter, projector, 292, 307-316
fire, 323 Shutters, port, 346-347, 350 Slip rings, 130
Slit assembly (see Lens Assembly) Soldering. 61-65, 617-618 Sound, frequencies, 419-420, 422
nature, 417-419
pitch, 419-420
reflection, 423-424
stereophonic, 576-582
transmission, 422
volume, 420, 594-598 Soundtrack, 252, 254, 257, 429-430, 460-468,
577-582 Speaker networks, 436-437 Speakers, 444, 535-547
poling, 547 Spindling, 367-368 Splicing (film), 257-261 Splicing (wires), 60, 61 Sprocket. 287, 288
intermittent. 288, 299-303 Square root. 21-22 Stack rectifiers, 116-123 Star connection. 104 Stereophonic sound, 576-582 Strippers, 292-293
Superheterodyne circuit, 642-643 Switches, 72-75
electro-magnetic, 115, 121 Switchboards (power), 75-77 Symbols, electrical, 219 Synchronizing (television), 631, 637
impulses, 647
Take-up, 288, 289-290, 321 Television and radio, 624-654 Television camera, 630-631 Testing sound components, 618-619 . Test reels, 605 Tetrode, 95
Threading (of film) 286, 289 Tone control, 435 Transformers, 84-87, 634 Transmission line; a.c, 432-437, 441-442, 546
547 Travel ghost, 316, 325 Treated lenses, 217-218 Trimmer condensers, 627-628 Triode, 95 Trouble lamps, 340 Trouble (sound), 603-614 Tubes (see amplifying tube, cathode ray tube, rectifying tube, etc.)
u
Underwriters, 58 approval, 58 code, 59
Valves (see tubes) Viewing angles, 231, 236-237 Volt, 7, 12 Voltage, 11
divider, 45, 46
drop, 45-48, 147, 480
peaks, 52, 53 Voltmeter, 605 Volume control (sound) 478, 479, 481, 493,
509
automatic. 507, 576-582 Volume expansion, 506 Volume indicator (see output meter) Volume (of sound), 420, 594-598
w
Watt, 20, 21 Wave shape, 35 Wire, deterioration, 59 Wire gauge, 50, 51
for gauging wire, 52 Wire tables, 50. 51 Working distance, 185, 200, 201
measuring, 200-201 Wows, 551