A highlight from The Dirty Secret behind Some of the World's Earliest Microscopes
This is scientific. American sixty seconds science. I'm christopher daga. Nearly three hundred and fifty years ago the dutch scientist onto uneven leeann hook scrape some white stuff off his teeth as thick as if it were batter. He wrote and pure at it under one of his handmade microscopes. What he saw was alive. He described as many very little living enemy cules. Very prettily moving the biggest of which shot through the water or spittle like pike does through the water what he had discovered in the plaque from his teeth. The enemy cules. I was bacteria and before lehman hooks observations of bacteria. nobody could suggest discovered bacteria because they didn't have the optical resolution. Lumbered van dyke is a material scientist at the delft university of technology in the netherlands. He says some of online hoax. Microscopes could magnify things more than two hundred times and contemporaries like robert hook and england. Who'd written a book full of microscopic observations. They were stunned by his findings. Robot loop actually spent quite some efforts trying to discover why was alternate So skilled and what kind of mysterious ways of losing lenses. Megan able to see for the first time. Bacteria but fund hook wasn't eager to reveal the secrets behind the hundreds of microscopes. He built some people have explicitly often about lenses and he he never said anything about it. It's still a big mystery Audis lenses were made after three hundred fifty years and the only way they could discover would be to break it open and then you would obviously see what lands would be like without to practice. That's where lombard van eyck comes in. He and his colleagues were able to peer inside several of online hoax. Microscopes with a non destructive technique called neutron tomography. It's the same idea as a cat scan but it uses neutrons instead of x rays and what they found surprise them instead of using lens types unknown to other scientists of his day. Finally when hook had just installed a common type of ground and polished lens in one of the microscopes they examined and the other one of his most powerful scopes. He had used a globe shaped lens. Produced by flame working a lens type. That is scientific competitor. Robert hook himself had already described and so now the iran thing is that actually most likely. It's the net is consult. That's hopefully glue used. The findings are in the journal. Science advances finite points out that von leo and hook was still an extremely skilled craftsmen and glass grinder able to build the finest microscopes of his day and his discoveries of blood cells and sperm cells parasites and bacteria. They were altogether extraordinary. It just seems types of lenses to do that. Work were anything but thanks for listening for scientific american sixty seconds science. I'm christopher dodd yada.