this post was submitted on 16 Oct 2023
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Dreams, Dreaming, etc.

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I don't remember exactly what he said, but it was about how it used to be difficult to make blue paint and that Leonardo da Vinci and other painters used to grind lapis lazuli and mix the powder with egg yolk and white wine to get a deep blue color.

He then did these steps but didn't get a deep blue color, which he said was because he hadn't gone through the arduous process of grinding and filtering only the bits from the rock with the deepest color, and that this long and arduous process was what made it so expensive in the past.

I suppose my dream was half true since Ultramarine was a really expensive paint made out lapis lazuli. ~~Though I still have no idea why I dreamed about a Vsauce short of all things.~~

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[–] [email protected] 6 points 10 months ago* (last edited 10 months ago)

I am pretty sure he made that video though, it's where I learned what prussian blue is 😳

[–] [email protected] 5 points 10 months ago* (last edited 10 months ago)

15:15
Why Is Blue Rare?
Vsauce2
5.5M views • 6 years ago

[–] Codename_goose 4 points 10 months ago

There is also the purple cloth dye used for royalty that involves crushing a specific type a snail and prepping the resulting material to dye the cloth and “ferment” the cloth in the liquid for a predetermined amount of time to get the deep dark purple.

https://www.smithsonianmag.com/smart-news/in-ancient-rome-purple-dye-was-made-from-snails-1239931/

https://en.m.wikipedia.org/wiki/Tyrian_purple