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How Does a Microscope Work ?

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Last updated date: 29th Feb 2024
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Introduction to Microscope Working

Kids, have you seen the microscope? Do you know how this instrument works?

We are going to learn all these in this article. 


First, let us see what the microscope is and how it works.


The microscope is an instrument that can be used to see and observe every small object that is not able to be seen by the naked eye, such as cells. The image of any kind of object is magnified by at least one lens in the microscope. This lens bends the light toward the eye and makes an object appear larger than it is.


How Does a Microscope Work? 

The microscope works on the principle of a Simple Microscope. The working principle of a microscope is that when any sample is placed within the focus of the microscope, a virtual, erect and magnified image is then produced at the least distance of distinct vision from the eye that is kept at the lens.


Working Principle of Microscope

The Optical Microscope Working Principle:

The optical microscope makes a magnified image of an object specimen with the objective lens. Further, it magnifies the image with an eyepiece to allow the user to observe it with the help of the naked eye.  Sometimes the optical microscope, also known as a light microscope, uses one or more than one lens to magnify images of small samples with visible light. 


Different Parts of the Microscope


Different Parts of the Microscope


The Working Principle of the Compound Microscope

 The term compound refers to using more than one lens in the microscope. In the compound microscope, more than one lens is used for a better view of objects. However, the compound microscope is one of the types of the optical microscope.


The compound microscope contains two lenses. The lens placed towards the object is called the objective lens, and the lens placed nearer the eye is called the eyepiece.


Different Types of Microscope 

The Microscope is of Different Types:

  1. Simple Microscope: The simple microscope is defined as a magnifying glass with a double convex lens that has a short focal length. The simple microscope is used in microbiology labs to study the samples of algae, fungi etc. It is also used by the jewellers to get a magnified image of the fine parts of the jewellery.


Image showing Simple Microscope


Image showing Simple Microscope


  1. Compound Microscope: The compound is defined as the microscope with a high resolution and it uses two sets of lenses and gives a 2-dimensional image of the sample. The compound microscope is used by the forensic department to detect the human fingerprints. It is also used in schools for academic purposes.


Image showing Compound Microscope


Image showing Compound Microscope


Amazing Facts about Microscope

  • Microscope is an instrument that is used to see a small object or by magnifying it.

  • If there is a single lens used in a microscope then it is called a simple microscope.

  • If two lenses are used in a microscope then it is called compound microscope.

  • The lens placed closer to the eye is called eyepiece while the lens placed at the other end is called objective.

  • The microscope has been used for the last 3,000 years in various forms.

  • The very first microscope was made to study insects.

  • Through multiplying the power of the respective objective lenses, the microscope gets its magnifying power.

  • The object can be magnified thousands of times if it is viewed through an electron microscope.

  • The first single lens microscope was made in the 1600s and it can magnify the objects 200 times.

  • The ability to see objects clearly and separately is known as resolution of that microscopic lens.

  • Under the microscope if any object is photographed, then it is called a micrograph.

  • The smallest object seen under the microscope was 500 nanometer long.


Kid Observing the Microscope


Kid Observing the Microscope


Summary

We learned that the microscope is an instrument that can be used to see and observe every small object that is not able to be seen by the naked eye, such as cells. Sometimes the optical microscope, also known as a light microscope, uses one or more than one lens to magnify images of small samples with visible light. The lenses are kept between the sample and the observer’s eye to magnify the image so that it can be examined in detail. The optical microscope works on the principle of reflection of light. 

FAQs on How Does a Microscope Work ?

1. Why is the microscope important?

The microscope is the tool that gives us a closer look of the objects that we cant see with the naked eye. If the microscope were not there, we would have no idea about the existence of tiny cells or how plants breathe or how the rocks change over time.

2. What was the first thing seen under a microscope?

In the year, 1676 the Living cells were seen first under the microscope. Antonie van Leeuwenhoek was the one who built a simple microscope having a single lens for the examination of blood, yeast and insects. He is the first, who gave us the description of cells and bacteria.

3. When were microscopes invented?

In 1590, the first ever microscope was invented. LensCrafters Circa invented the Microscope. All science fields have benefited from using the microscope. It was an invention that was done again in the late 16th century from a modest Dutch eyeglass maker named Zacharias Janssen.