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Thaumaturgy, in this context, is the application of these principles to achieve tangible results, whether in the form of creating alchemical elixirs, talismans, or achieving spiritual goals. [15] Crowley also elaborates on these alchemical principles in Magick (Book 4) , particularly in his discussions on the symbolic and practical uses of ...
It combines both an electric scalar potential and a magnetic vector potential into a single four-vector. [ 1 ] As measured in a given frame of reference , and for a given gauge , the first component of the electromagnetic four-potential is conventionally taken to be the electric scalar potential, and the other three components make up the ...
As an action potential (nerve impulse) travels down an axonthere is a change in electric polarity across the membraneof the axon. In response to a signal from another neuron, sodium- (Na+) and potassium- (K+)–gated ion channelsopen and close as the membrane reaches its threshold potential. Na+channels open at the beginning of the action ...
Rate dependence of the action potential is a fundamental property of cardiac cells and alterations can lead to severe cardiac diseases including cardiac arrhythmia and sometimes sudden death. [3] Action potential activity within the heart can be recorded to produce an electrocardiogram (ECG). This is a series of upward and downward spikes ...
Authentic Thaumaturgy is a set of rules for portraying magic in role-playing games, written by Isaac Bonewits. The first edition was published by Chaosium in 1978. [ 1 ] A substantially expanded edition was published by Steve Jackson Games in 1998.
The refractory period in cardiac physiology is related to the ion currents that, in cardiac cells as in nerve cells, flow into and out of the cell freely. The flow of ions translates into a change in the voltage of the inside of the cell relative to the extracellular space. As in nerve cells, this characteristic change in voltage is referred to ...
A primary focus of the plot is upon the five magics of the title: Thaumaturgy, Alchemy, Magic, Sorcery, and Wizardry. In the system devised for the trilogy, each discipline allows the user to perform magical actions within a particular set of rules. These rules are specified after the table of contents and are also stated within the narrative.
All-or-none law. In physiology, the all-or-none law (sometimes the all-or-none principle or all-or-nothing law) is the principle that if a single nerve fibre is stimulated, it will always give a maximal response and produce an electrical impulse of a single amplitude. If the intensity or duration of the stimulus is increased, the height of the ...