While one is openly in the house, the other is hidden in a secret room, and they periodically switch places, both going by the name Renato.

In an oscillating system the energy-releasing reaction can follow at least two different pathways, and the reaction periodically switches from one pathway to another.

Faced with a choice between two identical piles of food, ants switch periodically from one pile to the other.

As seen from Earth, all the planets appear to periodically switch direction as they cross the sky.

Most of the time the point guard stays in the middle, but the middle player would periodically switch, temporarily, with one of the corner players.

The membership of these aggregations is inconstant, with individual females periodically switching between different sites scattered over several kilometers.

The game encourages players to periodically switch between weapons.

As he plants, Mr. Rothermel periodically switches his tractor radio from the weather channel to a station with market reports.

Some patients may also develop a resistance to a certain type of medication and need to switch periodically.

It seems best thing is to periodically switch your accounts to different businesses--just keep them turning over like soil in a garden.