Discover the fundamentals of microscopes, from understanding different microscope types to learning how to use one effectively. Our Microscope Basics category provides comprehensive guides on the essential components, functions, and operation of microscopes for enthusiasts and beginners alike.
Depth of field in a microscope is the axial distance — measured along the optical axis — over which a specimen remains in acceptable focus without repositioning the objective or stage. At a 100x oil-immersion objective it can be as thin as 0.2 µm, which means a single bacterium can slip in and out of …
Electron microscope prices range from around $50,000 for a compact benchtop unit to well over $20 million for an aberration-corrected transmission electron microscope — and the instrument cost is only the beginning. Whether you are evaluating an in-house purchase for a materials lab, a university core facility, or a biomedical research group, understanding the full …
A simple microscope uses a single convex lens to produce a virtual, erect, and magnified image of an object — making it the most fundamental optical instrument in science and everyday life. From Antonie van Leeuwenhoek’s 17th-century single-lens devices that first revealed bacteria, to the jeweller’s loupe you hold at arm’s length today, the same …
Microscope resolution — the ability to distinguish two closely spaced points as separate — is the true measure of what a microscope can actually reveal, and it is governed by physics, not by the magnification dial. Understanding it changes how you choose objectives, set up illumination, and interpret what you see on a slide. This …
The history of the microscope is a 2,000-year relay race — passed from ancient glassworkers to Islamic scholars, Dutch lens-grinders, and 20th-century physicists pushing far beyond the limits of light itself. The microscope stands as one of the most consequential instruments in science, granting human eyes access to a world invisible to the naked eye, …
The electron microscope is the most powerful imaging tool ever routinely deployed in a laboratory — a device precise enough to resolve the space between neighboring atoms in a crystal lattice, or trace the folds of a protein no crystallographer has ever crystallized. The jump from a light microscope to an electron microscope isn’t incremental; …
Pick up a compound microscope for the first time and it can feel overwhelming — there are knobs on the side, a rotating turret at the bottom of the head, and a cluster of lenses you’re not sure whether to touch. Once you know what each part does and why it’s there, operating the scope …