Position Graphs

This week, my family bought a new wireless mouse after our old one broke. Though I'm not exactly sure how a wireless mouse works, I think that it is based on the same technology that we used in our position graph lab. A usb receiver works with the laser on the bottom of the mouse in determining the pointer's position. As the mouse moves towards the computer (usb receiver), the mouse pointer moves upward on the screen. In the same way, the mouse pointer movers downward as you move the mouse away from the computer. This also works for moving the mouse right and left. This seems like a good application of Physics in improving technology.