The effective mirror size for a virtual telescope made up of spacecraft flying in formation depends on the separation of those spacecraft.

ECONOMIST: Birds of a feather

The Compaq IPaq I-A1 is a cute little beige number with a wireless keyboard and a tiltable color LCD screen about the size of a makeup mirror.

CNN: Analysis: Are PCs toast? Internet appliances arrive

They laid in a combination of Treasury pricing data and algorithms that mirror the thought processes traders use when mentally pricing trades, factoring in order size and activity in related markets.

FORBES: Fear, Greed And Technology