One of the biggest problems facing speaker manufacturers is getting sufficient bass out of a less-than-sufficient space. Good, deep bass sound requires a lot of space to push sufficient amounts of air ...

Intersecting brane models realise four-dimensional physics by embedding stacks of D-branes at angles within higher-dimensional orientifold compactifications. Gauge symmetries arise from open strings ...

“The thing about our universe,” says David Lyth, a professor at Lancaster University in the United Kingdom, “is that it is not completely uniform. This has been a bit of a puzzle to cosmologists.” He ...