Diffraction Spectrum Candle: another physics infused holiday light- a plastic diffraction grating wrapped within the glass cylinder decomposes the light of a flame into rainbow spectra. The rainbow spectrum is produced not by refraction like that of a prism, but instead by diffraction, where light waves deconstructively and constuctively interfere. ➡️ Follow the link in my profile for info on where to get this candle holder and other amazing items featured here on @physicsfun #candle #rainbow #d