710 



OPTIC PROJECTION 



for lantern slides 202 



for sunlight 139, 161 



lamp with special 343 



lens breaking 57 



light for different positions of 



lamp 42 



lighting with main condenser 



only 234 



lighting opaque objects with 189 

 micro-projection with. . .237, 273 



mounting of 58, 62 



moving picture 403 



and objective, proportions ... 43 



opaque projection with 175 



out of center 53 



parabolic for micro-projec- 

 tion . 588 



protecting by sheet mica 



or glass 608 



reduction of brilliancy by. . . 618 

 second element of, and the 



objective 65, 588, 590 



second element for micro- 

 projection. .. .274-278, 591 



size for drawings 331 



size for lantern slides 202 



spherical aberration of 585 



substage 232, 347 



substage, high power 271 



substage, K6hler method with 278 



sunlight 139, 161 



three-lens 13, 652 



two-lens 10, 653 



with spherical aberration 585 

 without spherical aberra- 

 tion 584 



types of 587 



triple 588 



two lens 588 



Conditions for good micro-pro- 

 jection 309 



Connections, acetylene 129 



ammeter 480-482 



attachment cap of separable 



plug 86-87,503-504 



electric supply 502, 513 



gas lamp 126 



lime light 106 



to the switch 504 



voltmeter 478-482 



wattmeter 482 



Connectors, metallic 106 



separable extension 87 



Converging light, parallelizing. . 273 



Cornell University 147, 673 



Crater, increase in size with cur- 

 rent 248, 249, 564 



temperature of 546-548 



Crystalline lens of the eye, change 

 in shape for accommodation . . 658 

 in hyperopia and myopia . 660-661 

 rigid in presbyopia. . .661-662 



Cuff and Adams 141 



Current, alternating 475 



amount compared with direct 



73, 553-565 



at anodes, oscillogram of .... 495 

 appearance of arc. . .342, 542, 545 



and candle-power 553-565 



connections of ammeter to 



measure 482 



controlled by resistance . . 542-544 



direct 1 1 , 474 



direct for arc with magic lan- 

 tern 24 



for drawing 338 



for spectra 628, 640 



for experiments in vision 651-672 



for micro-projection 248 



increase in heat by increase 



of current 248 



increases size of crater 248 



insulation for large 513 



lack of 48 



lamps for small 78 



magic lantern with alternating 



68-77 



micro-projection with alter- 

 nating 284 



moving pictures with alter- 

 nating 398, 401, 566 



opaque projection 182 



oscillogram of delivered and 



supplied 493 



potential drop at arc 536-539 



precaution for heavy 186 



rectifier 489-492 



screen distance and 73 



size carbons and candle- 

 power 248, 55I-55 2 



unit of, the ampere 476 



wiring for large 513 



Curtains for darkening room .... 446 

 Curves of light reflection .... 460-465 

 Cycle with alternating current . . 486 



