45 | 1.34 | 1.03 |
| Orange | 610 | 1.22 | 1.13 | 1.00 |
| Yellow | 590 | 1.00 | 1.00 | 1.00 |
| Green | 550 | 0.87 | 0.93 | 0.86 |
| Blue | 490 | 0.72 | 1.27 | 0.92 |
| Violet | 470 | 0.77 | 1.35 | 1.73 |
|___________|_______________|______________|________|______________|
B. Heise has investigated the light of different flames, including
acetylene, by a heterochromatic photometric method; but his results
varied greatly according to the pressure at which the acetylene was
supplied to the burner and the type of burner used. Petroleum affords
light closely resembling in colour the Argand coal-gas flame; and
electric glow-lamps, unless overrun and thereby quickly worn out, give
very similar light, though with a somewhat greater preponderance of
radiation in the red and yellow.
____________________________________________________________________
| | | |
| | Percent of Total | |
| Light.
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