Tables 360-362 

 TABLE 360. — Energy Distribution for Some Tungsten Lamps 



(Taken from Forsythe, Christison, Gen. Electr. Rev., p. 662, 1929.) 



339 



* Calculated for cm 2 of molten tungsten. 



TABLE 361. — Brightness of Filaments and Bulbs of Some Tungsten Lamps and of Some 



Other Sources for Comparison 



TABLE 362. — Characteristics of Some Miniature Lamps 



(Forsythe, Watson, Gen. Electr. Rev., 34, 734, 193 1.) 



Automobile Mazda lamps Flash-light lamps 



r „^i» Watts Max. r^r,rii c Watts Max. 



No. Service Volts ™"£' persph. T No. Volts ^ e persph. T 



power candle °K. power candle °K. 



63 Rear, instrument bd .. 1 6.85 2.9 1.32 2820 19 1.25 0.19 4.10 2570 



67 Step, aux. headlight... /13. 5 2.9 1.27 2810 1 2.25 .40 1.39 2665 



81 Dome, panel 6.9 6.3 1.01 2915 11 2.33 .46 1.36 2665 



87 Signal 6.75 14.4 .80 2980 35 2.40 1.45 1.35 2635 



89 Dome, panel 13.5 6.3 .99 2870 14 2.47 .54 1.41 2700 



1 1 10 Headlight, depres. beam 6.5 21.5 .76 2975 16 2.47 .52 1.39 2565 



1 129 Head and spotlight. .. . 6.5 20.5 .76 2930 13 3.70 .98 1.11 2670 



1 133 " " " .... 6 31.9 .70 3045 17 3.70 1.02 1.06 2595 



1 141 Headlight 13 21.9 .70 2960 31 6.15 2.14 .87 2770 



1 1 42 Motor coach 12.5 20.6 .80 2885 



1 1 50 Side and headlight 44 21.7 .99 2815 * 1.5 .0286.0 2115 



11*8 Ford 2 fil headlight / 6 " 5 2 ° 9 ' 8l * 925 t IO 8 ° ,62 3l6 ° 



1 1 58 ford 2 m. headlight.. .^ Jg 22 25QO p g 4 g &3 ^ 2QQ 



1 1 83 Spotlight 5.5 49.1 .72 3055 § 8.5 55 .62 3120 



1000 Headlight, depres. beam 6 31 .73 2965 ** 6 .60 1.52 2485 



* Surgical (grain-o'-wheaf) 2 mm diam.. 8.7 mm long, 0.06 g. t RCA photophone photo-tube exciter- 

 RCA recorder. § Westero Electric sound-picture photo-tube exciter. ** Radio 40. 



Feb.. 1932. Gen. Electr. Rev., 50 K watt; 120 v; 3300°K.; 1.400,000 lumens: max. candle power 166,000 

 24 lumens ''watt. 10 K watt; 120 v; 330o°K.; 280,000 lumens; max. candle power 33,000; 24 lumens/watt. 



Smithsonian Tables 



