Difference Between Acids and Bases
Need beakers and/or flasks? Click here Acids and Bases play an important role in chemistry. We see them everywhere in our day-to-day lives, from our cleaning agents; soaps and detergents, to baking soda. Acids and bases (alkaline earth metal chemical elements) are 2 categories of corrosive substances. Any compound with a pH value between zero […]
Total Internal Reflection Fluorescence Microscopy
As an Amazon Associate Conductscience Inc earns revenue from qualifying purchases Introduction Total internal reflection fluorescence microscopy (TIRFM) is a cutting-edge optical technique that excites the fluorophores in a fragile axial region to visualize the cellular events occurring close to the cell surface. The evanescent field, a near-field wave which decays in intensity […]
Acids and Bases Overview
What are acids and bases? These are the chemicals that make water either acidic or alkaline. Acids make water acidic, while bases make it alkaline. To understand acids and bases properly though, we’ll need to look at water first. Water is a simple, yet complicated chemical. We’ve all heard that the formula for water is […]
Fluorescence Microscopy
Introduction Fluorescence microscopy is a specialized type of light microscopy that relies on the phenomena of fluorescence or phosphorescence. These terms describe materials that absorb light (photons) of one wavelength, then re-emit light of a second, longer wavelength.[1] The difference between fluorescence and phosphorescence is that the latter lasts much longer after the illumination is […]
Scanning Tunneling Microscope
Introduction Scanning Tunneling Microscopy, or STM, is a scanning probe technique. This means that the specimen is imaged by scanning a very sharp tip over its surface, while information about the shape or composition of the surface is collected based on interactions between the tip and the sample. This is unlike optical or electron microscopy, […]
Optical Microscopy: Specimen Preparation, Staining, and Quantitative Analysis
Introduction In most types of microscopy, the most complicated and sensitive aspect of the analysis is the preparation of specimens. The visualization of microorganisms using optical microscopy is no exception. Microorganisms are generally transparent, fragile, and highly sensitive to their environments, and for that reason, careful preparation is required to visualize them without significantly perturbing […]
The Light Microscope: Application Examples
Introduction The optical or light microscope is very well-suited for the imaging of biological specimens, for three main reasons: The resolution of the light microscope is close to or below the length scale of the structures of interest in biology. Microscopy does not require significant perturbation of the specimen. The versatility of the microscope allows […]
Electromyography
Introduction Electromyography (EMG) is a specialized diagnostic technique used to study the muscle function by analyzing the electrical signals emanating from the nerves and the muscles. EMG can distinguish the abnormal or diseased muscle from the normal muscle. The electromyography can detect muscular abnormalities such as fasciculation or chronic denervation in clinically normal muscle. […]
Total Internal Reflection Fluorescence Microscopy
As an Amazon Associate Conductscience Inc earns revenue from qualifying purchases Introduction Total internal reflection fluorescence microscopy (TIRFM) is a cutting-edge optical technique that excites the fluorophores in a fragile axial region to visualize the cellular events occurring close to the cell surface. The evanescent field, a near-field wave which decays in intensity over a […]