Students could look at the rapid changes to society that the invention of the internal combustion engine led to. The most obvious intervention was the car. How did the car change the lives of those who could afford one? How did Henry Ford's new manufacturing methods improve the speed of assembly and reduce the cost of production?
Arc Flash is the result of a rapid release of energy due to an arcing fault between a phase bus bar and another phase bus bar, neutral or a ground. During an arc fault the air is the conductor. Arc faults are generally limited to systems where the bus voltage is in excess of 120 volts.
The Flash (Bartholomew Henry Barry Allen) is a fictional superhero appearing in American comic books published by DC Comics. Barry Allen is the second and most recognized character known as the Flash.The character first appeared in Showcase #4 (October 1956), created by writer Robert Kanigher and penciler Carmine Infantino. Barry Allen was the Flash in the 1990s Flash live-action TV series, although this character incorporated elements of Wally's social life, as well as previously non-existent characters such as a brother and nephew. 2  He was played by John Wesley Shipp.