If you look into the laser on a mouse the pointer wont move. y?

i just got a laser mouse and wanted to know. y when i put my eye right up to the laser the pointer wont move. i would think it should b/c my eye is not clear. any 1 know?





and yes i know u shouldnt look into the laser but its not goin to do anything if you only do it for a sec. so no1 has to say that.

If you look into the laser on a mouse the pointer wont move. y?
first you should know the light which is comoing out from the mouse is not laser , is just a simple light emmited by diodes.
Reply:You do realize the laser is invisible and you're literally burning the hell out of your cornea right?
Reply:Actually...one second is enough to do some damage. It may not 'hurt' physically...but lasers are pretty powerful and can destroy cells in no time. I wouldn't recommend doing that anymore.





And to answer that question...the laser needs a flat surface so that it can distinguish movement within the texture that it's on. The eye has a lot of factors that would cause it to not pick up movement. You have to have it flat up against the surface to detect movement...try it briefly on your hand and you'll see what I'm talking about. With a lot of mice nowadays...the laser has two 'intensities'. When you pick it up from the desk...the laser dims down until it detects movement.
Reply:Optical mouse makes the pointer moves by the grooves on the mouse pad, or any surface. How it makes the pointer move is like using a track ball mouse and instead of the wheels and gears and rollers inside the trackball mouse it uses light. It begins by emiting light to the surtace, this surface will echo or reflect to the receiver in the mouse so will detect the height of the surface. Moving the move will change this height due to the uneven surface of the pad. But it is so precise that could even measure micrometers length. Optical mouse would find it actually not easy to move the pointer on a very smooth surface.





And about your question, the optical mouse's automatically disable the reading of the surface when you elevate the mouse by about few centimeters. Try touching the red light. So if your eye is that close to mouse light it will probably make the pointer move. BUT PLEASE NEVER LOOK AT THE LASER. DON'T TRY IT.
Reply:It is just because your cornea and cones and rods absorb most of the light, and since your eye is a sphere, the light goes out in all directions. On a flat surface the laser diode is close to, the light can only go one direction:into the sensor.