What color is water? Pure water I say is clear. However when I look at light that passes through a few meters of pure water it appears blue.
What color is THC? Sigma Aldrich says it is clear and when I look at isolate flat on a petri dish it dies seem ckear. But when that same compound is looked at from the side the color is pale yellow as identified in the early 60’s by the isreali scientist who discovered and identified it.
What color is CBN? Is it clear? when looked at through enough CBN to absorb in the UV spectrum, like looking through a column of water, then what will we perceive?
I once read why it is that water can cause us to perceive the blue color when it is the IR that the clear water absorbs. It has to do with how energy is converted in our vision detection cells that makes the brain perceive these things.
So out of CBN, seen as red, THC, seen as pale yellow, and pure water, seen as blue when we scan for absorbance (I have) in the entire spectral range we see no absorbance except outside of the visible spectrum range the scans do show absorbance (I have scanned each in UV) significantly within their own range but outside of human vision. Ever wonder how we can see a color when the only absorbance is IR or UV? Truth is I believe the mechanism is poorly known precisely why our eyes perceive what they do when the IR or UV range is involved.
I left IG after multiple folks began challenging me about my assertion that THC is pale yellow. Debating anything is unappealling beyond simple discussion. Debating CBNs color is also a topic that I find tedious. So really the question I would say is irrelevent as spoken. Asking what color THC, CBN, water, or myriad other substances with no absorbance in the visible range is pointless when they absorb outside that range.
Color like blue is seen because a lack of excitement at the IR level is perceived by the eyes and brain according to energy levels that end up being perceived as blue but only when enough is present to absorb the IR spectra then it does. Try it. Put some tap water into methanol after blanking a tube with methanol in a spectrophotometer. Right there deep down in the IR is an absorption peak in the IR but the rest of the scan is clear. But the water looks blue viewed through a column despite no absorption peaks in the visible range.
Does it occur to anyone else that one reasonable explanation why people report different colors of the same compound has to do with like mechanisms as to why we perceive water also in two ways? If you say water is blue or if you say water is clear then who is to say which is correct UNLESS note of IR and UV spectra is included in the description?
As for me I believe THC to be correctly described as pale yellow back in the early 60s, and also based on my own observations and deductions from available facts.
Personally I say water is blue.
CBN has deep absorbance outside of the visible spectral range. If the compound shows no visible absorbance but does show peaks outside the visible range then it stands to reason that in like manner to how we perceive colors for water and THC that we perceive CBN based not on visible spectra but rather as a side effect of absorption of light spectra outside our visual accuity? For now I tend to view clear compound that turns red as compound that has oxidized from either CBNA, D8 THC, or D9 THC. So for convenience sake when I make reference to CBN being red it is based on hundreds of observations and repeatable results that under the conditions I employ make my visible only spectrum eyes “fill in the blanks” and perceive the pinks and reds and such just as my eyes behold myriad blue and blue green shades from deep water but only clear water if in a cup. I believe there are two correct answer to the question, what color is water, and not just one.