Angular Refraction

I positioned myself beside a solid triangular glass prism resting along the wide wooden sill to measure optical dispersion in low-angle morning sunlight. As the beam struck the flint glass at approximately forty-two degrees, white light instantly decoupled into distinct spectral wavelengths across the pale painted pine. I stepped directly beside the highest-frequency band, observing the precise index shift between red and violet. Tapping my heel lightly on the wood to measure displacement intervals, I recorded the exact geometric spread against the grain lines. Verifying Snell's law under clear-sky atmospheric conditions provided an impeccably rigorous start to the morning.