Leonard Van Zanten Independent Researcher, 5428 Bushnell Riverside, CA 92505, USA lenvanzanten@msn.com International Journal of Fundamental Physical Sciences (IJFPS) 4 4 141-143 December, 2014 2231-8186 https://doi.org/10.14331/ijfps.2014.330079 This paper challenges the Huygens principle by asserting that changes in light's velocity do not cause refraction. Instead, refraction is attributed to angular deviation of each wavelength due to its incidence angle. Light's velocity is described in two ways: the true constant (300,000 km/s) and relative velocity, which depends on angular momentum and medium density. The paper proposes a rotational motion of light around atoms and argues that dispersion and refractive behavior are governed by angular wavelength, not velocity change. Experimental evidence is presented for angular moments and wave compression effects. Light, Refraction Velocity, Incidence https://creativecommons.org/licenses/by/4.0/