The most specific technical use of "h1on1" is the , used for validating meteorological conditions and energy density levels in laser and optical research.

In medical research, (often transcribed in scanned documents as H1ON1) is a subtype of the Influenza A virus.

Validation of the Schwartz and Hon Algorithm at Low Elevation Angles – This Department of Defense (DTIC) technical report discusses the algorithm's application in analyzing sky radiance and water surface reflections. 2. Virology & Immunology