"We have now completed the cycle of appearance and disappearance of mass through the series of endothermic, inbreathing, positive oscillations of compression pressure and exothermic, outbreathing, negative oscillations of expansion pressure which is the dual characteristic of electricity;" [Russell to NYT - 1930 November 2]

See Aslo

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Chaos
disappearance of mass
Dispersion
Dissociation
Entropy
expansion
expansion stroke of the universal pump
Explosion
Mother
negative discharge