flame carbon

British  

noun

1. electrical engineering a carbon electrode containing metallic salts that colour the arc in a flame-arc light

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Example Sentences

We have to consider the mercury arc light, the yellow flame carbon, the white magnetite and titanium arc—all of high efficiency, giving orange yellow in the flame-carbon to yellow and yellow white in the acetyline of the tungsten filaments.

From Project Gutenberg

Chlorine and hydrogen combine with a pale violet flame, carbon monoxide burns in oxygen with a blue flame, while ammonia burns with a deep yellow flame.

From Project Gutenberg