Syntonics Refs

Spectral outputs-college instrument+filters

Spectral outputs-syntonics filter transmission spectra

Syntonic filters-Roscolux-transmission spectra

Syntonic filters/ graphs, Lowenstein study

Roscolux Filter reference

Roscolux filter # Greek letter/ filter name Color
27 alpha red
15 delta amber
90 mu green
74 upsilon dark blue
385 omega violet-blue
77 pi bright blue
14 theta yellow
378 lambda blue
4790 N Neurasthenic
(magenta)
3204 D Depressant
(blue cast)
11 S Stimulant
(yellow cast)
117 (diffuser) makes the color translucent rather than transparent

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