Before we can say what the accelerometer of theiPhonedoes , we postulate to understand the basics of what an accelerometer does in general . The accelerometer is a machine that can assess the force of quickening , whether get by gravity or by movement . An accelerometer can therefore measure the amphetamine of motion of an object it is attached to . This is the job of the accelerometer in the Nike + iPod used in running shoe . The piezoelectric sensors can tell if the shoe they are in is propel ( in the instant that it is not , the gadget shut itself down ) and , base on the amount of time the shoe is on the reason vs. the amount of metre it is in the tune , the iPod can convert this information into an exact measure of the speed at which the runner is move .
Because an accelerometer senses movement and gravity , it can also sense the slant at which it is being held . This is what pee-pee the Wii work : Instead of a control stick , the exploiter or player misrepresent a controller ( rather like a remote restraint ) . The controller contains solid - state accelerometers , which can sense the sway , motility and speed being applied to them , as well as the direction in congress to the Wii ’s screen . This appropriate the player to use born , intuitive motility . When you play , for instance , a steel - fight game , the controller is used as if it was the sword , with the movement translate into electric signals to the computer .
The utilization of the accelerometer in the iPhone is similar to that in the Wii , although on a smaller plate . The movement and contestation of the twist is take note by the sensors , so it can narrate which way of life the screen is being held . This appropriate it to automatically adjust the visual yield to make it appropriate to the direction of the screen . In this way you may view inclination with the screen held vertically and observe video with the screen hold sideways .
