Fig. 12.

(a) The red, green and blue crosses identify the 440 nm, 545 nm and 613 nm wavelength peaks of a Fluorescent Sylvania Delux EL 2700 K, the magenta cross is the center of the zero-order diffraction, the white text next to each cross is the mandatory filename of each calibration reference. (b) It is a diffracted light spectrum of an incandescent lamp. The red lines are the longest wavelength boundaries, as well as the blue lines are the shortest wavelength boundaries, the magenta cross is centered on its zero-order diffraction. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)