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| | 1.4 Basic Physical Optics (E-V-1) (Site not responding. Last check: 2007-11-07) |
 | | Imagine further that you can change the direction of the "whipped shape," quickly and randomly at your end, so that a person looking back along the rope toward you, sees the "vibration" occurring in all directions—up and down, left to right, northeast to southwest, and so on, as shown in Figure 4-24b. |
 | | In Figure 4-24a, the rope wave is linearly polarized, that is, the rope vibrates in only one transverse direction—vertically in the sketch shown. |
 | | In Figure 4-24b, the rope vibrations are in all transverse directions, so that the rope waves are said to be unpolarized. |
| cord.org /step_online/st1-4/st14ev1.htm (253 words) |
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