{"id":26994,"date":"2025-10-03T04:55:01","date_gmt":"2025-10-03T04:55:01","guid":{"rendered":"https:\/\/vividscience.org\/?page_id=26994"},"modified":"2025-10-03T23:34:09","modified_gmt":"2025-10-03T23:34:09","slug":"magnification","status":"publish","type":"page","link":"https:\/\/vividscience.org\/index.php\/online-envirobio\/data\/technology\/magnification\/","title":{"rendered":"3b3 Magnification"},"content":{"rendered":"\n
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\n \n Magnification <\/span>\n\n \n \n Making the invisible visible <\/span>\n <\/h1>\n<\/div>\n\n\n
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Science Discovery Objectives<\/strong><\/h3> <\/div>\n<\/div>\n\n
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  • Describe the magnification possible with hand lenses and microscopes.<\/strong><\/li>\n
  • Explain why light sources and stains are important in microscopy.<\/strong><\/li>\n
  • Provide a historical example of how microscopes changed the way people viewed the world.<\/strong><\/li>\n<\/ul> <\/div>\n<\/div>\n <\/div>\n <\/div>\n <\/div>\n
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    When you think of a biology lab, what is the main piece of equipment you expect to see?<\/h3> <\/div>\n<\/div>\n <\/div>\n <\/div>\n <\/div>\n
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    The earliest optical or “light” microscopes date back to the seventeenth century, magnifying specimens beyond the range of normal human vision.<\/h5>\n
    Early magnification was approximately 10x, or ten times the unaided eye, now microscopes that shine light through specimens can magnify over 1500x and electron microscopes developed in the 20th century magnify 200,000x.\u00a0 Most of the research topics discussed in this course requiring microscopic examination, or “microscopy,” would use an optical “light” microscope.<\/h5> <\/div>\n<\/div>\n <\/div>\n <\/div>\n <\/div>\n
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    A bright light shines through a thin tissue of cells and finely ground glasses magnify\u00a0 the image.\u00a0 Both the eye pieces and specialized lenses called “objectives” magnify.\u00a0 From this image, if you have a 10x eye piece and a 10x objective, what is the total magnification?<\/h5>\n

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    answer: 100x<\/em><\/p> <\/div>\n<\/div>\n <\/div>\n

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