When we sit around a campfire, what are the reasons for the items swaying beyond the fire?

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When we sit around a campfire, what are the reasons for the items swaying beyond the fire?

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PRADEEP KUMAR 16th Nov, 2021

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PRADEEP KUMAR 16th Nov, 2021

The temperature of the surrounding air changes as a result of the campfire's heat convection.

This causes a constant change in the density and refractive index of air.

The refractive index of air changes with time, changing the refracted path of light ray

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