Mixing Lab
Every concept page shows one colorant at a time. Real glass is a melt: pick up to four colorants, set their concentrations, and watch the combined absorption curve and the transmitted color respond. The recipes set up classic combinations worth understanding.
recipes
dissolved ions
metal colloids
band-gap crystals
in the melt
Curves are illustrative approximations; the swatch is a coarse RGB rendering, not a full CIE pipeline. Mixing multiplies per-colorant transmittance with linear concentration scaling — real melts involve redox interactions between colorants that this model ignores.