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The microscope has become one of the most recognizable symbols of science. Starting with use of a simple lens in ancient times, to the first compound microscope around 1590, and up to the microscopes you are using in 7th grade life science, the microscope has allowed scientists to make discoveries about the “invisible world.” Typical Classroom Microscope What is the purpose of a microscope? • To magnify or enlarge the image of tiny objects. • The microscopes we will use this year in science can magnify objects 40 times, 100 times, and 400 times the size of the object. What type of microscope will we be using in class this year? • In 7th grade science, we use a compound light microscope for most of our lab activities. • A light microscope uses light as a source of energy for viewing objects. • A compound microscope contains two lenses for magnifying a specimen at the same time, the eyepiece (ocular) and one of the objective lenses. Eyepiece
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