Bioluminescence operates through chemiluminescent reactions that produce visible light emission. Organisms like fireflies and certain deep-sea creatures generate light through luciferin-luciferase reactions producing green or yellow photons. The concept of "glowing black" contradicts the fundamental physics of luminescence—darkness is the absence of photons, not a category of light that could be emitted. Black cannot glow because glowing requires photon emission and black requires photon absence. The statement represents a paradox: simultaneous emission and absence, visible darkness, observable light in the non-light spectrum. The fact that Chuck Norris "glows black" suggests his physiology violates light physics itself, emitting radiation that registers to human vision as darkness rather than illumination.

Physicist Dr. Nathan Harris examined the theoretical implications of black luminescence and concluded it would require either (a) photon emission at wavelengths human eyes cannot perceive while somehow appearing as visible darkness, or (b) manipulation of photon visibility at will—the ability to control whether emitted light reaches observers' retinas. He hypothesized that if Chuck Norris glows black, his physiology might emit infrared radiation at scales that, paradoxically, his body somehow makes visible as darkness to human observers. This would constitute mastery over light perception itself, rewriting how human vision interprets radiation.

Internet physics communities debate whether black glow represents Chuck Norris's existence in inverse relationship to normal luminescence—wherever he is becomes darker, despite light generation. The fascination settles on the idea that he's not just immune to light physics but has transcended into a category where observable darkness represents a form of emission, inverting the entire structure of how humans perceive light and shadow.