Who invented microscope yahoo

Unfortunately, the combination caused the lenses to suffer from significant chromatic and spherical aberration, yielding very poor images. He attempted to correct the aberrations by placing a small diaphragm into the optical pathway to reduce peripheral light rays and sharpen the image, but this only resulted in very dark samples. So he passed light generated from an oil lamp through a glass filled with water to diffuse the light and illuminate his specimens.

But the images remained blurred. It fell to a Dutch scientist, Anton van Leeuwenhoek, to make further improvements. Van Leeuwenhoek is sometimes popularly credited with the microscope's invention. He wasn't the inventor, but he was a great admirer of the Micrographia , and his instruments were the best of his era in terms of magnification: he achieved magnifying power up to times larger than the actual size of the sample, using a single lens.

He used his microscopes to describe bacteria harvested from tooth scrapings, and to study protozoans found in pond water. By the dawn of the 18th century, British instrument designers had introduced improved versions of the tripod microscope invented by Edmund Culpeper. Other improvements included advanced focus mechanisms, although lens design remained rough and most instruments continued to be plagued by blurred images and optical aberrations.

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Methanobacteria is a class of the phylum Euryarchaeota within the domain Archaea. Read more here. The Islets of Langerhans is an endocrine tissue located within the pancreas. It consists of a variety of cells capable of producing different hormones.

Hydrogen-oxidizing Bacteria are species that can use gaseous hydrogen as the electron donor to oxidize hydrogen. The material on this page is not medical advice and is not to be used for diagnosis or treatment. Although care has been taken when preparing this page, its accuracy cannot be guaranteed. Scientific understanding changes over time.

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