plural of electron spin resonance

A container with an open hole or neck containing a column of compressible fluid (gas) and frequently used to attenuate a certain frequency, as to eliminate noise.

(chemistry) the mesomeric effect

(chemistry) A compound for which no simple structure can be written, but which actually has a structure midway between two simple ones - normally one polar and one nonpolar.

A chamber whose dimensions allow sound to echo and build up. / A similar chamber that allows resonance of electromagnetic waves.

(physics) The characteristic energy at which the amplitude of a system undergoing resonance is enhanced.

A form of waveguide, closed at each end, used to create an intense electromagnetic wave

plural of Helmholtz resonator

Any of a set of spectrum peaks in the extremely low-frequency (ELF) portion of the Earth's electromagnetic field spectrum, generated and excited by lightning discharges in the cavity formed by the Earth's surface and the ionosphere.

plural of cavity resonator