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.
Part of the Data center management glossary: An arc flash is an undesired electric discharge that travels through the air between conductors or from a conductor to a ground. The resulting explosion can cause fires and serious harm to equipment and people.