Spiritualized backed off a bit on "Sweet Heart Sweet Light" but, as it was with the group's other discs, the new album still features the kind of arrangements that take special care: thick, droning, not-so-simple waves of swooping, swirling guitars and synths under Mr. Pierce's laid-back vocals.

WSJ: Spiritualized Revival | By Jim Fusilli

To do so, astronomers resort to Fourier analysis, a mathematical technique that allows them to break a complex curve into a set of simple ones called sine waves.

ECONOMIST: Extrasolar planets

It reduces the chaotic patterns of brain waves to a simple 100-point scale to indicate level of awareness.

FORBES: Defensive Medicine

The air was smooth and the air waves silent while we enjoyed the simple joy of flying over yet another landmark city.

FORBES: San Francisco: Up Close And Personal