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Experimenters:Chris Cleven, Chris Farrington, Ryan Webb
实验者:Chris Cleven, Chris Farrington, Ryan Webb |
One of the unique properties of holograms is that the size of the viewed image scales with the wavelength of the viewing light. Examine a hologram with mercury light to see that scaling. The mercury source has three prominent wavelengths and you can see three distinct images of different size. The use of an interference filter allows you to examine just one of the images at a time. At left is a movie of a hologram formed by making images at different angles and combining them into a short movie. You can grab the handle at the bottom of the movie and sweep it back and forth to get an impression of how the holographic image changes as you move your head.
全息图的一个独特特性是,所观察到的图像大小与观看光的波长成正比。用汞光观察全息图,可以看到这种缩放效应。汞光源有三个显著的波长,你可以看到三个大小不同的图像。使用干涉滤光片可以让你一次只观察到一个图像。左边是一段全息图的电影,该全息图是通过在不同角度上制作图像并将它们组合成一段短片。你可以抓住电影底部的把手左右滑动,以感受当你移动头部时全息图像的变化。
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