Use ancilla in a sentence. an aid for use as in understanding or accomplishing something; often, specif., a handbook, or manual. Origin of ancilla. see ancillary.
Making the world better, one answer at a time. The accelerometer in mobiles is used to measure the orientation or vertical and horizontal positioning of the phone. The most basic application of this is the device knowing when to alternate the view of the screen depending on how you are holding it.
Bookmark with: The three most common motion sensors used in technology today are PIR, Ultrasonic and Radar. Ultrasonic uses sound to detect motion and Radar detects pulses. The third, most commonly used, (and also used in our Mr. Beams Motion Sensing LEDs) is PIR motion sensors, which detect heat. If you live almost anywhere in the US, it's likely you have experienced major heat waves this summer and a few may notice a slight change in the range of your Mr. Beams Motion Sensor Light.