How the pigment known as Han purple was synthesized by the ancient Chinese of the Qin and Han dynasties has puzzled scientists. ███ ███████ ████████ ████████ ███ ████ ████████ ███████████ ████ ███ ███ ██████ ██ ███ ██████████ ██ █ ██████ ████ ██ █████ █████ ██████ ████ ███████ ████ ████ ████████ ██ █████████ ████ ████████ ██████████ ███ ████████ ██ ████ ████ ███ ██████ ██ ████ ██ ████████ ███ ███████ ████████████ █████ ███ ██████ ███ ████████ ██████████ ██ ██████████ ████████ ██████ █████ ███████████
The author hypothesizes that Han purple was probably discovered by accident during the production of glass. This is based on the fact that the same chemical ingredients are used for Han purple and a common type of white glass that was made during the period Han purple was made. In addition, both Han purple and this white glass were made using processes that involved high heat and mixing in lead.
The author assumes there’s no more likely explanation for the origin of Han purple besides accidental discovery during the production of white glass.
Which one of the following, ██ █████ █████ ████ ██████████ ███ █████████
Chemical analysis shows ████ ████ ██ ███ █████ █████████ ██ ████ ███ ██████ ███ ███ █████ █████ ████ ████████ ██████ █ █████ ████████████ ███████
Han purple was ████ ███ ██████ ███ ██████████ ██████ ███████ ███ █████ █████ ███ ████ ██ ████ ███████ █████████ ██████
The technique used ███ █████████ ███ ██████ ███ █████ ██ ████ ███ ██████ ██████ ███ ███ ███ ███ ██████████
The ingredients used ██ █████████ ████ ███ ██████ ███ ███ █████ █████ ████ ██████ ██████████ ██████ ███ ███ ███ ███ ██████████
The white glass ██ █████ ██ ████ █████████ █████████ ████ ███ ███ ███ ███ █████████ ████ ███ ██████ ███