Question

Why do objects waver when seen on a really hot day?

Answer 1

1. Objects waver on a really hot day due to the refraction of light by the different layers of the atmosphere.
2. The waves that seem to appear near hot objects, like a campfire on a cool night, result from a phenomenon called refraction.
3. Refraction happens when light that is passing through one substance, like air, changes its speed when it enters another substance, like glass or water.