Where is the bulb located on a microscope?

The bulb on a microscope is located at the base, where it serves as the light source for illuminating the specimen being observed. This positioning is crucial because it allows the light to travel upward through the stage and the specimen, making it visible through the lenses. The base houses various components, including the light source and often the electrical connections needed for illumination. Proper positioning at the base ensures that the light is directed effectively, providing optimal clarity and brightness for microscopic observations.