The phrase "power flux" refers to the variations or fluctuations in electrical power. There are several synonyms for this term, including power surge, power spike, power fluctuation, and power variability. Each of these words refers to the same phenomenon of varying amounts of electrical power. A power surge is a sudden increase in power levels, while a power spike occurs when a brief burst of energy is released. Power fluctuations refer to changes in power levels over time, and power variability refers to power levels that change randomly. Regardless of the terminology used, power flux can have significant impacts on electronic devices and must be monitored and regulated to prevent damage.