![]() Then the trick is to make the right-perspective image invisible to the left eye and the left-perspective image invisible to the right eye, so that each eye sees only its own perspective. One image is recorded from the perspective of the right eye, and the other from the perspective of the left eye. This inventor’s idea was to project not one but two images on the same screen. Your finger’s position appears to change relative to the background. You can see this is true by holding up your finger in a fixed position and alternately opening-and-closing each eye. Your right eye sees objects from one perspective, while your left eye sees it from a slightly different perspective. The idea is based on the fact that a large component (but not the only one) of seeing in 3-D is stereo vision. Long ago someone came up with a brilliant idea for making movies projected onto a 2-D screen appear in 3-D. One interesting application of this phenomenon is 3-D movies. Such a filter is called a polaroid or polarizer. the substance is transparent to this light), while if the light is polarized perpendicular to the polarizing axis, then virtually all of the light is absorbed. When the light polarization is aligned with what we define as the polarizing axis of the substance, then little of the light is absorbed by the substance (i.e. If the light is plane-polarized (see Figure 3.1.1), then its propagation through a medium will be affected by the preferential orientation of charge oscillations. This material can have a dramatic effect on light passing through it. ![]() ![]() The upshot of this is that the charges react to electric fields along one direction (or rather, components of electric fields along one direction), while they don't react along a perpendicular direction. It so happens that it is possible to construct a solid substance which greatly restricts oscillatory motion of electric charges along a single dimension. There is little we can say about it in this class, except to say that because the light wave is electromagnetic in nature, it interacts with electric charge, which is present in all matter. \)Īs stated previously when discussing the speed of light waves through transparent media, the mechanisms that govern light propagation through media are complicated. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |