They were clickings at strictly random intervals, but there was a sort of average number per second, at that.

At ten other random intervals, her own name was called; if she responded to this, she received a mild electric shock.

The secure radio system they used simply changed frequencies in random intervals.

The intelligence was always sent to him by some form of dead drop which was changed at frequent though random intervals.

It was closed after a month, and would open at somewhat random intervals until around 1995.

Some larger atomic nuclei are unstable, and so decay (release matter or energy) after a random interval.

The time machine sends the traveller back in time by a random interval.

Although the names came in random intervals, they tended to be grouped together.

Beta keys were given away in random intervals on the official homepage.

Rod is introduced early in the series, and pops in at seemingly random intervals.