>>11238422Dicyanin Goggles are goggles that use a dye called dicyanin as filter for the lenses of the goggles. This was created by the a man name Walter J. Kinler in the early 1900s. In the book The Human Aura which was written by Mr. Kinler, you can supposedly see the human aura with these goggles. He describes that he was able to tell if people are sick according to the color of the aura. The aura can also change in meditation. The dye was eventually banned due to it being extremely flammable and toxic or that’s the reason they gave to ban it.
In the 60s or 70s, scientists decided to recreate the goggles made by the Mr. Kinler concluding that all of Mr. Kinler's claims about seeing auras is false resulting in the dicyanin goggles to be labeled a joke, lie, or farce.
Pic related is page from his book which an archived version is at the link below
https://archive.org/details/humanatmosphereo00kiln/page/n21/mode/2up 