Microscopy & Imaging

Convex lenses are thicker at the center and thinner at the edges, causing parallel light rays to converge towards a focal point, which allows them to produce real or virtual images depending on the object's distance. They are widely used in applications such as microscopes, cameras, and projectors for magnification and image projection. In contrast, concave lenses are thinner at the center and thicker at the edges, causing parallel light rays to diverge, resulting in virtual images that are always upright. They are commonly employed in glasses for nearsightedness, laser beam expanders, and optical instruments to correct aberrations. Together, concave and convex lenses play crucial roles in various optical experiments and applications, enhancing light manipulation and analysis in laboratory settings.

The microtone hand type, commonly known as a microtome, is a precision instrument used in laboratories for slicing extremely thin sections of biological specimens, typically ranging from 1 to 100 micrometers. Designed for manual operation, it features a handwheel that allows users to finely adjust the thickness of the cuts, ensuring consistent and accurate sectioning. Equipped with a sharp, adjustable blade made from stainless steel or glass, the microtome securely holds tissue samples in place, minimizing vibrations that could affect slice quality. Its stable base and ergonomic design make it user-friendly for individuals of varying skill levels. Microtomes are essential in histology and pathology for preparing samples for microscopic examination, aiding in disease diagnosis and research. Additionally, they are widely used in educational settings to teach tissue preparation techniques, making them a versatile and invaluable tool in biological sciences.