Simple (one lens) microscope and the compound (many lenses) microscope are the two basic configurations of optical microscope. And all of them share the same basic components. The eye piece or the ocular is a canister that contains two or more lenses that brings the image to focus for the eye.

The first simple microscope was made and developed by Anton van Leeuwenhoek. Leeuwenhoek lived from 1632 to 1723. He made the early microcope that had one lens, thus it was called a simple microscope. Though it only had a single lens, it was said to have been regarded as the best microscopes of his time. […]

Before viewing the specimen under the electron microscope, there are different techniques done as sample preparation. The techniques to be done for a specific specimen would depend on the type of specimen and the type of analysis desired.
Some of the techniques commonly done for electron microscope specimen are cryofixation, fixation, embedding, dehydration, sectioning, staining, freeze […]

Electron Microscopes were developed due to the limitations of Light Microscopes. There are two general types of electron microscopes developed – the TEM or the transmission electron microscope, and the SEM or the scanning electron microscope. The Transmission Electron Microscope was the first type of Electron Microscope to be developed in the year of 1931. […]

The first electron microscope prototype was built in 1932. It was built by German engineers Max Knoll and Ernst Ruska. It was still capable of magnifying objects by four hundred times. This instrument was called electron microscope because a beam of electrons are passed through the specimen rather than a beam of light. The electron […]