Abstract
This paper reports on the result of a preliminary study of utilization of a smartphone ambient light sensor for get the average speeds of motion along a straight line based on experiments. We attach a smartphone to a dynamics train that travels across multiple light sources where the distance is already set. The main source of this experiment is obtained from the luminosity curve obtained from free android applications. From the curve, we can get position information against time. So from the data we can get the value of average speed. Then the use of the smartphone light sensor in physics experiments can be done easily and fun.
Highlights
Mobile devices such as smartphones and tablets are part of the daily life of many young people in recent years, and in many cases even for kids [1]
Smartphones are affixed to the dynamics trains using double-sided tape with light sensor in a position facing the light source
The dynamics train is moved through a light source derived from the LED strip whose distance between the LEDs is made fixed 10 cm
Summary
Mobile devices such as smartphones and tablets are part of the daily life of many young people in recent years, and in many cases even for kids [1]. Accelerometer and Gyroscope can be used to analyzing simple pendulum [5], study of two-dimensional oscillations [6], analysing free fall [7], introduction to the concepts of acceleration and deceleration [8], Investigation of the rolling motion of a hollow cylinder [9], Investigation of kinetic friction [10], analyse free and damped oscillations [11] and coupled oscillations [12]. While Kapucu [16] utilizes light sensors to obtain average speeds by combining the physics knowledge of optics and kinematics. We will present a preliminary study of a simpler method of obtaining average grade grades using light sensors without having to understand more deeply about optical concepts
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