Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Spectral composition in different light treatments: (A) red: blue: far-red = 90: 10: 0 (“High-R”), (B) red: blue: far-red = 50: 50: 0 (“High-B”), and (C) red: blue: far-red = 42: 42: 16 (“High-B+FR”). Peak wavelength numbers are shown for each broadband.
