Thermal Halo
A thermal halo is a ring of apparent warmth that appears around the edges of a cold object in infrared footage, often mistaken for a glowing energy field at low resolution.
A thermal halo is a ring of apparent warmth that forms around the edges of a cold object against a warm background in long-wave infrared (LWIR) imaging systems. This artifact arises from sensor limitations and optical effects, potentially appearing as a luminous structure at low resolution. It is a physical phenomenon distinct from actual energy fields or supernatural auras.
What this means in real life
When you look at a hot stovetop burner through a thermal camera, you see a bright glowing ring around the coil—that's the thermal halo where heat radiates outward into the cooler air.
What it isn’t
It is not a solid physical object or barrier. Many assume a thermal halo is a distinct layer or shield, when it's actually just the visible effect of heat or light spreading from a source into its surroundings.
Commonly misused online
Social media often conflates 'thermal halo' with lens flare or camera artifacts, treating any bright ring in a photo as a thermal halo when it may simply be optical distortion or reflection.