Diffraction Spectrum Candle.
A thin plastic diffraction grating surrounds the flame in this rainbow design. The rainbow spectrum is not created by refraction, as with a prism, but by diffraction, where light waves deconstructively and constructively interfere.
A thin plastic diffraction grating surrounds the flame in this rainbow design. The rainbow spectrum is not created by refraction, as with a prism, but by diffraction, where light waves deconstructively and constructively interfere.