Using modern portfolio theory, investors can build portfolios that maximize return for a given level of risk or minimize risk for a desired level of return. Since its introduction by Henry ...

Plate tectonics is geology’s Theory of Everything. The realisation in the 1960s that Earth’s crust is made of fragments called plates—and that these plates can grow, shrink and move around ...

This shows just how flexible transformers are once you can wrap your mind around the theory. We have previously covered RF amplifier builds as well as some rather interesting balun hacks.