The Alchemy of Color and Chemical Change in Medieval Manuscripts발음듣기
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The Alchemy of Color and Chemical Change in Medieval Manuscripts
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출처 : 칸아카데미
The Alchemy of Color and Chemical Change in Medieval Manuscripts
Medieval manuscript artists typically made paint from colored materials ground into powder and mixed with a liquid binder.
Many of the most brilliant pigments didn't come straight from nature but were made through alchemy, an experimental practice that predates modern chemistry.
Beyond trying to change base metals into gold the alchemists explored how materials interacted and transformed.
Discovering paint colors was a practical outcome.
Alchemy embraced astrology, medicine, philosophy and mysticism.
And within those contexts, colors had specific meanings.
A brilliant red, vermilion, was associated with chemical change and with alchemy itself.
Producing vermilion involved combining two elements, sulfur and mercury, mixed and heated until a chemical reaction occurred.
When ground into powder, vermilion turns deep red.
Many other vibrant pigments result from chemical transformations-- mosaic gold, produced by fusing tin and sulfur in the presence of mercury;
verdigris, made by exposing copper to fumes of vinegar, wine, or even urine;
And lead white, made in a process similar to verdigris but with lead.
Chemical transformation doesn't just happen when a color is born.
It can occur throughout the life of a pigment even centuries later, and museum researchers study it.
The vivid colors of illuminations are often preserved because books are typically kept closed.
But sometimes, books are left open and their pigments can fade from exposure to light.
Some colors darken from exposure to atmospheric conditions others corrode.
Verdigris can actually destroy the parchment or paper it's painted on.
Today, chemistry deepens our knowledge about paint colors, their identification and potential transformations.
Museums take preventative measures by controlling an artwork's environment and exposure to light.
Sometimes, an original color can be restored as long as this is done carefully.
By analyzing the chemical nature of materials scientists can visualize how a pigment may have looked when it was first created.
Chemistry also reveals the astonishing knowledge that medieval alchemists and painters brought to working with color.
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Medieval manuscript artists typically made paint from colored materials ground into powder and mixed with a liquid binder.발음듣기
대기중
Many of the most brilliant pigments didn't come straight from nature but were made through alchemy, an experimental practice that predates modern chemistry.발음듣기
대기중
Beyond trying to change base metals into gold the alchemists explored how materials interacted and transformed.발음듣기
대기중
Producing vermilion involved combining two elements, sulfur and mercury, mixed and heated until a chemical reaction occurred.발음듣기
대기중
Many other vibrant pigments result from chemical transformations-- mosaic gold, produced by fusing tin and sulfur in the presence of mercury;발음듣기
대기중
It can occur throughout the life of a pigment even centuries later, and museum researchers study it.발음듣기
대기중
The vivid colors of illuminations are often preserved because books are typically kept closed.발음듣기
대기중
Today, chemistry deepens our knowledge about paint colors, their identification and potential transformations.발음듣기
대기중
Museums take preventative measures by controlling an artwork's environment and exposure to light.발음듣기
대기중
By analyzing the chemical nature of materials scientists can visualize how a pigment may have looked when it was first created.발음듣기
대기중
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