__Units of measure:__

# SAR is specific absorption rate. This is the power of electromagnetic radiation absorbed per mass of body tissue (W/Kg or mW/Kg (Watts or milliwatts per Kilogram); 1W = 1000mW). SAR can be averaged over the whole body, or a sample volume.

# Electrical field strength is measured in V/m (Volts per metre).

# Power flux density is a measure of the rate at which electromagnetic energy flows through a surface, measured in W/m(2) (Watts per metre squared). It can also be expressed in mW/cm(2) (1mW/cm(2) = 10W/m(2)).

# Power is measured in Watts (W, or mW (1/1000th W)).

# Moving electric charges produce magnetic fields. Magnetic fields (magnetic flux density) are measured in Tesla (T) or Gauss (G). 100nT (nano Tesla) = 1mG (1 milli Gauss). 100nT is the same as 0.1 micro Tesla, or 0.1μT.

# Frequency refers to the number of oscillations (of the electromagnetic wave) per second and it is measured in hertz (Hz), where 1Hz = 1 oscillation per second. Kilohertz (KHz) is 1,000 Hz, megahertz (MHz) is 1,000,000 Hz and gigahertz (GHz) is 1,000,000,000 Hz.

# For ICNIRP guideline exposures click here.