Question

when you sit by a campfire,how does it's hot air heat's you?​

Answer 1

Answer:

When you sit by a campfire, most of the heat you are receiving from the fire does not come from hot air. It comes from thermal radiation. Generally, there are three ways that heat can travel: radiation, conduction, and convection.

Answer 2

Answer:

The thermal radiation from the fire spreads out in all directions and is able to reach you. This thermal radiation is mostly in the form of infrared waves and visible light. In contrast, the campfire heat transferred via convection shoots straight up into the sky and never reaches you (i.e. hot air billows upwards).

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