a-b | c | d-f | g-j | k-m | n-p | r-s | t-z
Tesla The unit of magnetic field
Three phase electricity A system often used in power systems. A circuit has three “live” wires or phases instead of one, and can carry more electricity for the same amount of wire as single-phase circuits.
Transformer Device used to change the voltage of electrical circuits
Transmission In electric power systems, used to describe the highest voltages, used for transmitting power long distances
UKCCCR United Kingdom Coordinating Committee for Cancer Research, the body which set up the UKCCS
UKCCS United Kingdom Childhood Cancer Study, a major epidemiological study of childhood cancer which looked at EMFs among other possible factors.
Voltages can be pictured as electrical pressure. The analogy is often used with water in a pipe; voltage is analogous to the pressure of the water.
Volts The unit of electrical voltage, symbol V
Volt per metre the unit of electric field, symbol V/m or V m-1
Watts The unit of power, symbol W
Wavelength. The distance between two successive cycles of a wave – 6000 km for 50 Hz
WHO World Health Organization