Related Experiment Video
Updated: Jan 26, 2026

An Intra-Tissue Radiometry Microprobe for Measuring Radiance In Situ in Living Tissue
Published on: June 2, 2023
A nondestructive method for measuring electrical conductivity of intracellular matter of tissue in situ
Abstract:
A nondestructive method has been developed for measuring electrical conductivity of intracellular matter. The method is based on easily measurable electric parameters of cells in suspension. Experiments were made using suspensions of erythrocytes in a physiological salt solution. Results confirmed suitability of the method for determining conductance of the cytoplasm and were in close agreement with those reported by other authors. The method allows the determination of intracellular conductivity in tissue as well.
Related Concept Videos
Electrical Conductivity
In a practical conductor, an applied electric field may be sustained, causing a flow of electrons, which produce a current. The differential form of the current, the current density, is related to the electric field.
More generally, it is related to the force per unit charge, which involves the...
Physical and Chemical Properties of Matter
Electric Field of Parallel Conducting Plates
Consider a cross-section of a thin, infinite conducting plate having a positive charge. For such a large thin plate, as the thickness of the plate tends to zero, the positive charges lie on the plate's two large faces. Without an external electric field, the...
Classifying Matter by State
Classifying Matter by Composition
According to its composition, the matter can be classified into two broad categories — pure substances and mixtures.
A pure substance is a form of matter that has a constant composition throughout with uniform properties. For example, any sample of sucrose has the same composition and same physical properties, such as melting point, color, and sweetness, regardless of the source from which it is isolated.
A mixture is composed of two or...
The Atomic Theory of Matter

