Optical mouse: Most desktop computer users today have some type of optical mouse, which uses devices that emit and sense light to detect the mouse's movement.
An Optical Mouse
the laser sensor, to detect movement, if it doesn't have a ball!
An optical mouse functions by using a laser light sensor to detect movement of the mouse instead of a roller ball. An optical mouse can be wired or wireless.
A lazer mouse.
Optical...If im not mistaken.
The species Peromyscus leucopus, otherwisely known as the white-footed mouse, often uses a concentrated laser that projects out of its eyes to detect movement of other rival mice. The white-footed mouse then plans accordingly to strike rarely with mercy.
The mouse uses infrared light to pick up signals of movement from the mouse and transfer them to movement on the screen. It is much more accurate and can be faster than the response on a standard ball mouse. If you pick up the mouse and it has a red light shining from the bottom it is an infrared mouse.
It's to do with how the movement of the mouse isconverted into signal. A ball mouse uses a small marble sized ball that is rolled around underneath the mouse in a compartment. The sideways and up/down movement of the ball is converted by the mouse into an signal that tells the CPU how the mouse is moving. An optical mouse has no ball, but uses light, emitting red light onto a surface and tracking movement of the mouse by how this light is reflected back.