(October 24, 1632 – August 26, 1723)

Like Michael Faraday, Antonie van Leeuwenhoek had very little education. He was an artisan whose lens-making business transformed into a research scientist. He made and sold a variety of lenses, whose primary uses were as telescopes and reading-magnifiers. Having crafted these glasses for a long while, he decided to engage in amateur investigations. His observations of bacteria (which he called animacules) made him the first person known to have seen these microorganisms. As a result, it had him being tagged the “first microbiologist” and the “father of microbiology”. Van Leeuwenhoek’s microscopes were rudimentary: with estimated magnifying powers of between 200x and 300x. Notwithstanding they were powerful enough to grant him visual access into a hitherto unknown microbial world. Other cells he studied ranged from simple unicellular spermatozoa to complex multicellular muscles, fungi, insects and arthropods. He meticulously documented his findings: many of which he later shared (as letters) with the London Royal Society. Being an artisan with little education meant that he could only write in his native Dutch. But the significance of his works was such that the Royal Society had them translated into Latin and English, before publishing them. Those publications brought him so much fame that dignitaries such as: Gottfried von Leibniz, Prince William III of Orange and his wife Queen Mary II of England, Scotland and Ireland visited him. He was also granted audience with Czar Peter the Great of Russia in his royal yacht. Dedicated in his honor is the lunar crater: Leeuwenhoek.

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