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. 2021 Oct 16;22(20):11159. doi: 10.3390/ijms222011159

Table 1.

Brief definitions for some of the terminology used in this review.

Terminology Definition Units
(Symbol)
Reactive Oxygen Species (ROS) A chemically reactive class of molecules containing oxygen. -
Free Radicals Highly reactive atoms or molecules characterized by a lone (unpaired) valence electron. -
Spin State A description of valence electron position, important for determining recombination or disassociation of radical pairs. -
Non-ionizing Radiation
(NIR)
Radiation that contains too little energy per photon to ionize an atom or molecule (remove an electron). Wavelengths greater than 280 nm. Nanometers
(nm)
Zeeman Effect The splitting of spectral lines (electron decoupling) due to a static magnetic field. -
Electromagnetic Fields
(EMFs)
Radiation produced by the movement of charge. The interaction of electric and magnetic fields is generally
described as a wave form transporting energy.
Varies
Magnetic Fields
(MFs)
A vector field emanating from magnetic material or the result of electrical current. Tesla (T)
& Hertz (Hz)
Static Magnetic Fields A magnetic field that has a constant or unchanged vector. Tesla (T)
Radiofrequency Refers to the osculation of electrical current or EMF. Magnetic fields with radiofrequency are produced by alternating electrical current. Hertz (Hz)
Apoptosis-induced
Proliferation
Cell division by mitosis (proliferation), induced by
mitogen release from neighboring cells undergoing programed cell death (apoptosis).
-