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.
Absorptances of an object containing the carotenoids (a) galloxanthin, (b) zeaxanthin and (c) astaxanthin, with peak absorbance increasing twofold, from 0.5, 1, 2, … to 32. The mid-wavelength of each spectrum, λmid, is where the absorptance equals 0.5 (indicated with a small circle). The value of Dmax is the absorbance of the oil droplet at the peak wavelength.
