These give out a continuous spectrum of light, and thus affect a wide range of frequencies that are of interest to astronomers.

ECONOMIST: Going, going, nearly gone

Sopheng had kindly arranged to be my guide for the rest of my stay, and over the next two and a half days, through an ever-changing flow of sunshine, light showers and deluging downpours, he went far out of his way to give me an exceptional tour of Banteay Chhmar.

BBC: Piecing together puzzles in Cambodia

Governments tend to give their workers light workloads and generous pensions in lieu of higher wages (which have to come out of the current budget).

ECONOMIST: Public-sector workers