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Tag: etymology

Engines Podcast

Engines of Our Ingenuity 3269: Cyanotype

Dr. John Lienhard

Posted on May 23, 2022 · Episode: 3269 Blueprint: Once a thing, now only a metaphor. Today, a thing lingers as a metaphor.

Tags blueprint botanist botany Carolyn Herschel cyan cyanotype dark blue diazo drafting draftsman drawing board etymology John Herschel kyanos language metaphor metaphorical photography T-Square tracing boys William Herschel

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