It is possible to observe the impression of leaf epidermis cells on white wood glue. The stomata and guard cells are easily visible. The regular shape of the stomata makes it an ideal specimen for practicing drawing.

The condenser aperture diaphragm (or iris diaphragm) is used to control the contrast and resolution of an image. This article explains the usage of the diaphragm.

There are several accessories that are part of a microscopic workplace.

This article explains how the lamp of a microscope is exchanged. It may not apply to all microscope types.

What are some of the things to look out for when cleaning the microscope? What solvents should or should not be used? This article gives an overview.

Koehler illumination ensures that the specimen receives a bright uniform light. Only those areas actually seen are illuminated.

Koehler illumination offers a range of advantages over “critical illumination”. Illumination is more uniform, specimen heating is reduced as well as light reflections for photographic work.

In this post, the function of the condenser aperture diaphragm is explained. The purpose of the condenser is to concentrate the light onto the specimen, its diaphragm regulates resolution, contrast and depth of field.