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Leeuwenhoek single-lens microscope
A high-magnification single-lens microscope built by 17th-century Dutch cloth merchant Antony van Leeuwenhoek, reaching 200–270x magnification, far e…
Timeline
- 1671–1674Delft · NetherlandsLeeuwenhoek taught himself glass grinding in Delft and produced biconvex single lenses only 1–2 mm in diameter with magnification above 200x, far surpassing the compound microscope used in Hooke's Micrographia, providing the key optical tool for subsequent microbial discoveries.
- 1674–1676Delft · NetherlandsIn 1674 Leeuwenhoek observed single-celled protozoa in lake water samples, in 1676 observed bacteria in pepper water (which he called "animalcules"), and that same year began reporting to the Royal Society, astonishing the scientific world and laying the empirical foundation of microbiology.
- 1677–1680London · United KingdomIn 1677 the Royal Society dispatched a committee to Delft to verify Leeuwenhoek's discoveries, confirming the reality of the animalcules. In 1680 Leeuwenhoek was elected a Fellow of the Royal Society, and the design principles of his single-lens microscope spread widely through the Society's reports, spurring a wave of microscope improvements across Europe.
Sources
- The Collected Letters of Antoni van Leeuwenhoek — Antoni van Leeuwenhoek (1939)
- Antoni van Leeuwenhoek and His 'Little Animals' — Clifford Dobell (1932)
- Antonie van Leeuwenhoek – Wikipedia https://en.wikipedia.org/wiki/Antonie_van_Leeuwenhoek