A bacteria and mitochondria which are about 500 nm can use viewed under the microscope.
What is a microscope?
The microscope is a device used to observe small objects, even cells. The image of the object is magnified by at least one lens of the microscope. This lens directs light to your eyes and makes an object look bigger than it really is.
The microscope is an instrument that magnifies a small object and reveals details that are too small to be seen by the eye. The most well-known type of microscope is an optical microscope that uses visible light focused through a lens.
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