Linné on line Physics and the Cosmos
Linnaeus (1707–1778) only used his own eyes when he studied the world around him. But there where also optical instruments available during his times, such as the telescope and the microscope, and he had access both to magnifying glasses and microscopes. These instruments have in common that they magnify the picture so that we can see details that are otherwise not visible to the naked eye. For example, with a microscope we can study cells and their anatomy. But visible light has its limitations. The wavelength of the light sets a limit on how small details that can be resolved. If we want to study things that are smaller than roughly one thousandth of a millimeter (i.e. 10 000 Å) we have to use something other than ordinary visible light. Examples of other instruments that are being used to explore the inner structure of matter are the electron-microscope and accelerators.
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