How to make light measurement app in MIT App Inventor 2

This video shows you how to create an app to measure light levels using MIT app inventor 2 Physical-world component that can measure the light level. light sensor is a component in smartphones, notebooks, other mobile devices, automotive displays and LCD TVs. It is a photodetector that is used to sense the amount of ambient light present, and appropriately dim the device&screen to match it. The ‘lux’ is the standard international unit of the ambient light used for the illuminance. The typical performance of this sensor ranges from below 50 lux to over 10,000 lux. Here 50 lux can be generated inside dim light whereas over 10,000 lux at noontime. The lux is the SI unit for illuminance and that is equivalent to one lumen for each square meter. This is used in photometry for measuring the intensity which is perceived through the human eye when light hits through a surface. In the year 2004, there are the phones are many phones are designed with ambient light sensor and 30% of the phones are sold out. Whereas in the year 2016, 85% of the phones are inbuilt and sold out. What is an Ambient Light Sensor? An ambient light sensor is one kind of component which is utilized in mobile devices, smartphones, notebooks, LCD TVs, and automotive displays. Ambient light sensor working principle is, it is a photodetector, used for detecting the sum of ambient light nearby & appropriately reduces the mobile screen’s light. So this avoids the screen brightness whenever the users are...