A light sensor is able to measure the intensity of light. Most smart phones now have a light sensor built right into the phone. The light sensor is used by the phone’s camera to detect light to take a good photo. This sensor is also available for use by any app.
This article will focus on how to use a light sensor on an Android Phone. The phone we used for testing is the Samsung Galaxy Note 3. It uses a Maxim MAX88921 RGB Sensor to detect available light. Other Samsung Galaxy phones use similar sensors. Most every modern smartphone with a camera has a light sensor. There are many different apps that display a light value, based on the reading of the sensor. Learn about the physics of light and how a this type of sensor works by experimenting with a smart phone’s built-in light sensor.
Light Experiment Items Needed
- Android Smartphone with light sensor
- Magnetic Measurement App – We used “Android Sensor Box”
- Light – natural or artificial