The LSN-100 light and laser sensor combines a laser and a light sensor
in the same unit. Each LSN-100 will come with reflective tape, which
the laser will be focused onto. The sensor can be placed up to 1 foot
away from the tape. When the beam between the laser and tape is broken
a corresponding signal will appear in the recording screen.
The student can use just one sensor to study objects such as
a pendulum, or two can be used for a variety of other experiments.