theta; Θ, θ +
(Greek: the eighth letter of the Greek alphabet; Θ, θ; theta symbol, ϑ)
Equivalent in classical Greek to t + h, as in "right-hand", but in modern Greek to spirant th, as in "thin".
It utilizes the magnetic field generated by its own currents, which are induced by pulsing, to confine the plasma for several microseconds.
The device is configured so that the self-generated magnetic field runs parallel to a longitudinal axis.
It occurs naturally in children up to about 12 years of age, but it is considered abnormal in adults.2. The normal brainwave in the encephalogram of a person who is awake but relaxed and drowsy.
It occurs with low frequency and low amplitude.3. A relatively high amplitude brain wave pattern between approximately 4 and 9 hertz that is characteristic; especially, of the hippocampus but occurs in many regions of the brain including the cortex.
2. The generic term for electronic navigation systems in which a position is derived by calculations based on the bearing from two, or more, emitters located at different but accurately known positions.