Microscope : What is it?
| A microscope is a magnifying instrument used for viewing small objects. There are different types of microscopes used for different purposes; the most common type enlarges the specimen 40x or more. The microscope is also used in capturing images in photography and video applications.
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Kinds of Microscopes include the following: |
Compound Microscopes
- The compound microscope is the most familiar type of microscope.
- It allows a a varied range of magnification, typically between 40x to 1000x.
- It has a rotating nosepiece for focusing.
- It uses only one objective at a time, providing a two-dimensional image of a specimen.
- It is often used for biological, polarizing, and metallurgical purposes.
Stereo Microscopes
- The stereo microscope provides an upright 3-dimensional image.
- It is useful for biologists when performing dissections, for paleonthologists examining and cleaning fossils, and for technicians repairing circuit boards.
- It is often used at magnifications from 5x to 50x, but can reach up to 400x.
Photography and video applications
- Microscope designed for photography and video applications capture, display, and preserve images.
- It uses CCD (charged couple device) technology and microscope imaging.
- It allows display of real-time video images and is available in different formats: 35mm, Polaroid, video, or digital imaging.
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Magnification: Higher is not necessarily better. Choose a microscope with a magnification range appropriate for your subject. A “microscopic” specimen will need up to 100x magnification, while circuit boards may need 5 to 10x magnification.
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