A detector, the orange square, is placed in the pipe and properly measures the pressure (position is given in meters and time is given in seconds). A detector, the orange square, is placed in the pipe...A detector, the orange square, is placed in the pipe and properly measures the pressure (position is given in meters and time is given in seconds). A detector, the orange square, is placed in the pipe and properly measures the pressure (position is given in meters and time is given in milliseconds).