Tech for time travel in “Back to the Future”

The answer to the crossword question is “FLUXCAPACITOR“, which refers to the fictional device used by Doc Brown in the “Back to the Future” movie franchise to make time travel possible in his DeLorean car. The flux capacitor is the key component of the time-travel mechanism, a device that allows the car to generate the 1.21 gigawatts of electricity necessary for time travel to occur. It works by storing and releasing large amounts of electrical energy, which enables the DeLorean to travel through time. The term “flux capacitor” has since become synonymous with time travel and is a widely recognized pop culture reference.