Elon Musk has been influential as a proponent of solar power in the past decade. In several interviews, the Tesla and SpaceX CEO has often expressed his vision of a future powered solely by solar ...

IN 1954 AT&T’s Bell Labs announced, with some fanfare, a “solar battery”—a device which would supply electricity constantly, with no need for recharging, whenever it was illuminated. At a time when ...

Power graphs provide an innovative way to visualise and analyse the algebraic structure of finite groups. In a power graph, the elements of a finite group serve as vertices, and an edge is drawn ...