Electric fields are measured in voltage (volts per meter).
The higher the voltage the stronger the electrical field. Actual electrical current is not necessary to measure voltage. In other words electrons need not be moving down a circuit to be measurable. The human body generates weak electricity between 10 to 100 millivolts to power the heart and the central nervous system. This is not enough to power so much as a television which requires 25,000 volts to create a picture on TV.
Magnetic fields are measured in amps (amperes per meter A/m). Unlike an electric field, which can be measured even when current is not actually flowing, a magnetic field is created from the motion of the electricity moving in a circuit.
Because electricity and magnetism are intertwined the two can be measured using a related quantity measurement called a microtesla (µT).
A gauss unit is actually a measurement of the magnetic flux density, just as is the microtesla (µT) which is often the preferred measurement system in science.
Hertz is a measurement of the number of waves, called cycles that pass per second. AC power cycles through at an Extremely Low Frequency rate of 60 Hertz per second. Intermediate Frequency Fields (computer screens and anti-theft devices) measure around 300 Hz to 10 MHz Radio Frequency Fields (cellular telephone antennas and microwave ovens) measure from 10 MHz to 300 GHz (Corrosion-Doctors.org).
Hertz Units Conversions
1 Hertz is a frequency of 1 cycle per second.
1000 Hertz = 1 kilohertz kHz
1,000,000 Hertz = 2 Megahertz MHz
1,000,000,000 Hertz = 1 Gigahertz
Watts refer to a measurement of electromagnetic waves in the radio wave region of the spectrum. Because the magnetic wave and the electric wave are so close together at this frequency they are measured, “as two components of an electromagnetic wave.” The power density of that wave is measured in watts per square inch (W/m2), to describe “the intensity of these fields (corrosion-doctors.org).”
Gauss Meters and Flux