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Hans Janssen and Zacharias Janssen are held to be the inventors of the microscope, according to the recorded letters of the Dutch envoy, William Boreel. The invention was around the year 1595. Galileo Galilei developed a compound microscope using a convex and a concave lens in the year 1609. The formulation of Christian Huygens in the 17th century, the simple 2-lens ocular system with achromatic correction is popular even today. Anton van Leeuwenhoek popularized the functionality of the instrument among the biologists and the credibility, the "Father of Microscopy" is generally awarded to him. Leeuwenhoek made his famous single lens microscope in the year 1673.

During the beginning years of invention, the microscope was a toy in the rich houses. The first significant discovery using microscopes was about the circulating blood system of the human body. It then led to many valuable discoveries for mankind. The steps such as the correction of spherical aberration, use of achromatic lenses etc were appreciated during the 1820's. August Kohler introduced the microscope lamp with filters in 1880. He also finalized the condenser position to provide the best image projection. The theory of the microscope was published by Ernst Abbe in 1873. In the same year, Ernst Leitz introduced the microscope with a revolving mount for 5 objectives. The oil immersion lens was used from the year 1878, and the apochromatic objective was introduced into microscopy by Ernst Abbe in1886.

The first commercial UV microscope was presented by Zeiss in 1904. In 1930, Fritz Zernike invented the phase contrast microscope, which helps to study transparent living things. The revolutionary TEM electron microscope of Ernst Ruska and Max Knoll was introduced in 1931 and the scanning electron microscope was evolved later in 1937. Yet another milestone in the history of microscopes is the scanning tunneling microscope invented in 1981 by Gerd Binnig and Heinrich Rohrer, which help to visualize the atomic level 3D structure of objects. The scanning laser confocal microscope was commercially available from 1983.

Microscopes provides detailed information on Microscopes, Electron Microscopes, Parts of a Microscope, Compound Microscopes and more. Microscopes is affiliated with Reverse Osmosis Water Filter.

Unico Educational Microscopes

Unico educational microscopes are used for performing analytical applications in school and college laboratories in an easy and convenient manner. The operational consistency of these devices enables research applications to be carried out within the shortest possible time.

Unico Educational Microscopes - Designed for Efficiency

Educational microscopes manufactured by Unico are available in a variety of models. These include Model M15 Junior Classroom Microscope Corded, Model M16 Freedom Jr. Cordless Microscope, Model M220FL Monocular Microscope – Fluorescent, Model M220FL M Monocular Microscope - Fluorescent, Mechanical, Model M220FL D Dual Head Microscope – Fluorescent, Model M220FL DM Dual Head Microscope - Fluorescent, Mechanical, Model M252LED Dual Head Microscope with LED and many more.
The important features of the popular Model M15 Junior Classroom Microscope: Corded are:
• Monocular head inclined at 45° degrees, rotates 360° for easy of use
• Built-in bright white illumination with 115 V / 20 W tungsten bulb
• Large stage, acid and reagent resistant with locked on stage clips
• Intermediate coarse focus adjustment: avoids the complexity of making two adjustments
• Achromatic objectives: 4x, 10x, 40x
• Built-in N.A 0.65 condenser with 5 position disc diaphragm
• 10x WF eyepiece
• CSA & UL approved 3 wire power cord
• Sturdy and reliable frame
• Stage drilled to accept attachable mechanical stage

The adjustable stage travel safety rack stop offered with this equipment prevents slide damage. Unico educational microscopes also come with plastic dustcover and user's manual.

Purchase from Leading Distributors

To purchase Unico educational microscopes for your institution, it is important to contact an established distributor who can provide quality instruments to meet your needs.

About the Author

Block Scientific is the affordable source of fine Medical Laboratory Equipments. We stock high quality branded microscopes including Unico Educational Microscopes.

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