Say I have an IR thermal measuring gun. I point it at things, things that are hot measure hotter. Is there ever a scenario where a hot object measures as not hot? I don't mean some strange situation ...

Question: Why do you see waves in the air when it is hot or coming off a hot object? Answer: The waves that seem to appear near hot objects, like a campfire on a cool night, result from a phenomenon ...

You might think that a hot object pushes atoms and molecules away due to radiation pressure. But a research team showed that for a polarizable atom, the opposite occurs: the hot object attracts it.