Explore the diverse world of microscopy techniques with our in-depth articles and guides. This category covers various methods, such as bright field, dark field, phase contrast, and fluorescence microscopy, allowing you to enhance your skills and knowledge in the field of microscopy.
For most of human history, the atom was a philosophical concept — matter’s smallest theorized unit, invisible by definition. That changed in 1931, when a pair of German scientists aimed a beam of electrons at a thin specimen and produced an image no light microscope could ever rival. Today, we don’t just see atoms; we …
Mankind’s innate curiosity and our desire to learn and grow has continuously pushed us to figure out better ways of doing things, and this includes being able to see things smaller and smaller, hence the invention of the microscope. The definition of a microscope is a piece of optical instrument that is designed to view …
Dark field microscopy illuminates a specimen with a hollow cone of oblique light so that only the light scattered or diffracted by the specimen reaches the objective — leaving everything else in pitch-black. That simple optical trick turns colourless, unstained, and nearly transparent specimens into bright glowing structures you simply cannot see under conventional bright …
You might be wondering what a brightfield microscope is, but chances are, you have already seen one- more specifically, a compound light microscope. The thing is, brightfield microscopes are really common and can be found in just about any lab and science classroom. These microscopes operate through a basic form of optical microscopy, and are …
Super-resolution microscopy is the family of optical techniques that breaks the ~200 nm diffraction limit of conventional light microscopy, resolving biological structures down to 10–50 nm — while still using light and, in many cases, still imaging living cells. It earned the 2014 Nobel Prize in Chemistry and has since revealed biological architecture that was …
A polarizing microscope is a specialized compound microscope fitted with two crossed polarizing filters and a rotating stage, purpose-built to examine birefringent materials — substances that split light into two rays — which glow with vivid interference colors against a pitch-black background that a standard brightfield microscope simply cannot produce. Understanding polarizing microscope uses matters …
A phase contrast microscope makes living, unstained, transparent specimens visible by converting invisible differences in light’s phase into visible differences in brightness — something a standard bright-field microscope simply cannot do. It achieves this through two matched optical components: an annular diaphragm in the condenser and a phase plate in the objective, which together exploit …
Fluorescence vs confocal microscope is one of the most common points of confusion in biological imaging — and the answer surprises most people: a confocal microscope is a fluorescence microscope. The difference is a single component, a tiny pinhole aperture, that blocks out-of-focus light and lets confocal produce sharp optical sections through thick samples. Widefield …
Observing yogurt under a microscope reveals two types of live bacteria — rod-shaped Lactobacillus and bead-like chains of Streptococcus — but you need about 1000x magnification with oil immersion and a simple stain to see them clearly. At 400x they appear as faint dark specks, enough to confirm they’re there; at 1000x you can distinguish …
Learning how to view soil under a microscope comes down to five steps: collect a fresh sample from the top 2–4 inches of ground, disperse a small amount in distilled water, pipette a drop of the cloudy liquid onto a slide, add a coverslip, and scan from low to high magnification. Done right, you’ll find …