Object details at a larger scale
Microscopy is a technique for producing visible images of structures or details too small to otherwise be seen by the human eye. To improve the resolution within various light source can be used, for example:
The demonstration of details is low with visible light but very high with electron beams as used in electron microscopy (EM).
The workhorse of histologists was the light microscope. It was invented already in the 16. Century: Using various arrangements of glass lenses it was possible to obtain detailed cellular differences.
Fluorescence microscopy uses UV light for the illumination of an object instead if visible light. Fluorophores can then be visualized with adequate filter arrangements. Fluorescence microscopy is preferentially employed with immunohistochemical procedures because the various antibodies can be labeled different classes of fluorophores.