3.3: Activity 1

Integrated Human Anatomy and Physiology Lab Manual I: Fundamentals of Structure and Movement · LibreTexts

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    From LibreTexts, under CC BY-NC 4.0, as the source states it; its equations are written in TeX, which the PDF shows typeset. This page at LibreTexts.

    Calculating Total Magnification

    Microscopes are essential tools in biology and other sciences, allowing us to explore the minutest details of specimens. Total magnification helps us understand how much larger the microscope makes an object appear compared to its actual size. Remember with a compound light microscope you are magnifying with two lenses, so to calculate the total magnification you multiply the ocular lens magnification by the objective lens magnification. The magnification of objective lenses typically ranges from 4 times to 100 times, with each lens's magnification clearly labeled on its metal casing. The ocular and objective lenses work in tandem to produce a magnified image, allowing for detailed observation of specimens.

    The total magnification is the product of the ocular magnification times the objective magnification: Look at the side of the objective lens currently in use to find its magnification. The ocular lens magnification is typically 10 times, however, can vary to 15 times or 20 times.

    Formula

    Total Magnification = Objective Lens Magnification × Eyepiece Lens Magnification

    Table \(\PageIndex{1}\): Calculating Total Magnification
    Objective Lens Objective Lens Magnification Ocular Lens Magnification Total Magnification
    Scanning lens (red band)      
    Low-power lens (yellow band)      
    High-power lens (blue band)      
    Oil-immersion lens (white band)      

    This page titled 3.3: Activity 1 was last modified on Tue, 01 Sep 2026 01:45:33 GMT and is shared under a CC BY-NC 4.0 license and was authored, remixed, and/or curated by Lakshmikanta Sengupta and Susmita Sengupta.