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Leeuwenhoek

Mentioned in 1 analyzed podcast episode across 1 show

Appears On

The Rest Is Science

Episode Appearances

The Rest Is Science

The Rest Is Science · May 27, 2026

Why Michael Abandoned Ink

“Historical figure discussed for early microscope observations of microorganisms and sperm in late 1600s-early 1700s”

Mechanical pencil specifications and lead grades (H, B, HB classifications)Graphite composition and hardness scienceWriting instrument permanence and archival quality