Perception & technology TOK postcard

How has the use of the technology of microscopy advanced our knowledge of the natural world? The first magnifying devices from ancient times were hemispheres of glass or glass balls filled with water that made written letters appear larger. It was not until the 1500"s that lenses were first made. Robert Hooke first saw cells in 1665 with a microscope that had a magnification of about 50x. In 1683, Anton van Leewenhoek"s...

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