Optical microscope
Videos
The optical microscope, also referred to as a light microscope, is a type of microscope that commonly uses visible light and a system of lenses to generate magnified images of small objects. Optical m
Scientist using an optical microscope in a laboratory
A miniature USB microscope
The oldest published image known to have been made with a microscope: bees by Francesco Stelluti, 1630
Basic optical transmission microscope elements (1990s)
Bright-field microscopy
Videos
Bright-field microscopy is the simplest of all the optical microscopy illumination techniques. Sample illumination is transmitted white light, and contrast in the image is caused by attenuation of the
Optical microscope
…micrograph). Objects can be lit in a variety of ways. Transparent objects can be lit from below and solid objects can be lit with light coming through (bright field) or around (dark field) the objective lens. Polarised light may be used to determine crystal orientation of metallic objects. Phase-contrast imaging…
An example bright-field micrograph. This image shows a cross-section of the vascular tissue in a plant stem.
Loupe binoculaire p 1030891