Understanding the human body is a team effort. That's where the Yachtel group comes in.

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This is Scientific American's 60-second science. I'm Christopher in Taguata.

Nearly 350 years ago, the Dutch scientist, Antuniv on Leo and Hook,

scraped some white stuff off his teeth, as thick as if it were batter, he wrote,

and peered at it under one of his handmade microscopes.

What he saw was alive.

He described it as many very little living animicules, very prettily ammoving, the biggest of which shot through the water or spittle like a

pike does through the water. What he had discovered in the plaque from his teeth, the anamicules,

that was bacteria. And before von Leuwenook's observations of bacteria, nobody could have discovered

bacteria because they didn't have the optical resolution. Lombard von Eich is a material scientist at the

Delft University of Technology in the Netherlands. He says some of von Leyenhook's microscopes could

magnify things more than 200 times. And contemporaries, like Robert Hook in England, who'd written a book full of microscopic observations,

they were stunned by his findings.

Robert Hooke actually spent quite some effort trying to discover why was Anthony Verdehruc so skilled

and what kind of mysterious ways of producing the lenses

made him able to see for the first time bacteria?

But von Leonehook wasn't eager to reveal the secrets behind the hundreds of microscopes he built.

Some people have explicitly asked him about the lenses, and he never said anything about it. It's still a big mystery how

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