A key algorithm that quietly empowers and simplifies our electronics is the Fourier transform, which turns the graph of a signal varying in time into a graph that describes it in terms of its ...

Practical batteries deliver only part of the energy density available from their active materials. Connection, cooling, protection and control all require structures that store no energy themselves.

Concepts discussed are dimension-indepedant; it's just easier to explain and visualize things in 2D but they're applicable to higher dimensions without loss of generality. Instead of dealing with only ...