A microsecond is equal to 1000 nanoseconds or of a millisecond. The pulses from Millisecond Pulsars (MSPs) are used as a system of Galactic clocks. Individuals were given exposure durations of 100, 500, and 1500 millisecond intervals. Typical ruby laser pulse lengths are on the order of a millisecond. Fractures of the crust cause starquakes, observed as extremely luminous millisecond hard gamma ray bursts. It is temporally accurate to less than a millisecond. This process takes a fraction of a millisecond. A three-byte MIDI message requires nearly 1 millisecond for transmission. A typical machine does realtime calculations in a 1 millisecond repeating thread. Carbon planets, previously stars, are formed alongside the formation of a millisecond pulsar. One such planet is PSR J1719-1438 b, companion to a millisecond pulsar. Numerous time constants are defined in terms of TU (rather than the nearly equal millisecond). This enables the receiver to begin reading the 20 millisecond bits of the navigation message. The cycle is very rapid, taking less than a millisecond. All the remaining ones have half-lives ranging from 30 minutes to less than a millisecond.