spectrum light
Full-spectrum light is light that covers the electromagnetic spectrum from infrared through near-ultraviolet, or all wavelengths that are useful to plant or animal life; in particular, sunlight is considered full spectrum, even though the solar spectral distribution reaching Earth varies with time of day, latitude, and atmospheric conditions. “Full-spectrum” is not a technical term when applied to an electrical light bulb but rather a marketing term implying that the product emulates natural light.[1] Products marketed as “full-spectrum” may produce light throughout the entire spectrum, but actually do not produce an even spectral distribution, and may not even differ substantially from lights not marketed as “full-spectrum”.[1][2] Color temperature and Color Rendering Index (CRI) are the standards for measuring light. In general, Kelvin temperature ratings of 5000 K or higher and CRI of 90 or higher denote a truer, full-spectrum light.
