What causes a black flame?

This is black fire. When you mix a sodium street light or low-pressure sodium lamp with a flame, you'll see a dark flame thanks to the sodium and some excited electrons. "It's strange to think of a flame as dark because as we know flames give out light, but the sodium is absorbing the light from the lamp.

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What fire gives off?

All fires emit carbon dioxide, carbon monoxide, and particulate matter, including white (organic) carbon and black carbon. Thereof, what are black flames called?

Consequently, what is black fire called?

Keeping this in consideration, how hot is a black flame? The temperatures at the core during the explosion soar up to 100 billion degrees Celsius, 6000 times the temperature of the Sun's core.

In respect to this, is black fire real?

For real: If you shine a low-pressure sodium lamp on a yellow sodium flame, the flame will be black. Flames emits light and heat, so it seems impossible to make black fire. However, you actually can make black fire by controlling the wavelengths of absorbed and emitted light.