A lamp that emits light whose spectral distribution curve is approximately similar to daylight, such as fluorescent or incandescent lamp.
See Alexandrite Tsarstone collectors guide, Definition of Daylight lamp, http://w.alexandrite.com/viewpage.html?id=GG-089-00001 (A lamp that emits light whose spectral distribution curve is approximately similar to daylight, such as fluorescent or incandescent lamp.) (as of Jun. 01, 2026, 04:49 GMT).