Wavelengths
The wavelength of a single wave is the distance between two consecutive points of similar position (two crests or two troughs) along the wave.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"OpenStax College, The Light-Dependent Reactions of Photosynthesis. October 16, 2013."
http://cnx.org/content/m44448/latest/Figure_08_02_02.jpg
OpenStax CNX
CC BY 3.0.
