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WebRed 40 absorbs wavelengths at 500 nanometers best, while Blue 1 absorbs best at a 620 nanometers. Figure 4. Absorption spectra of the food dyes Red 40 and Blue 1. Note that the red dye absorbs light strongly at a wavelength of about 500 nm, which is in the blue-green part of the visible spectrum (see Figure 3 for colors and wavelengths). WebMar 20, 2024 · Cherry Coke Red. “Cherry Coke red is a rich, brunette red with burgundy and violet undertones,” Alex Brownsell, celebrity hairstylist and cofounder of Bleach London, says. “The great thing ... WebMar 22, 2024 · Published Mar 22, 2024. The University of Pennsylvania’s BioPond, a hidden oasis on the urban campus behind the school’s quad, was dyed red over the … greenberg dental \\u0026 orthodontics eustis fl