Light microscopes are instruments that use visible light and lenses to magnify small objects, allowing scientists to observe details that are not visible to the naked eye. They typically consist of an objective lens and an eyepiece, which work together to enlarge the image of the specimen. Commonly used in biology, light microscopes can magnify objects up to 1,000 times their actual size. These microscopes are essential tools in laboratories and classrooms, enabling the study of cells, tissues, and microorganisms. They can be used with various techniques, such as staining, to enhance contrast and reveal specific structures within samples, making them invaluable in fields like microbiology and histology.