It was taken by James Clerk Maxwell by photographing the ribbon three times - each time with a different color filter over the lens.

它是由詹姆斯·克拉克·麦克斯韦通过三次拍摄同一缎带得到的-每次在镜头上用不同的彩色滤光片。

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This, of course, presents maintenance problems as the extract filter file may evolve over time.

这样，当然，随着时间的过去，就像提取过滤器文件那样能够目前仍保留的问题可能进一步进化。

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If you're using a cone-shaped filter, set it in a funnel over a container that is large enough to hold the strained liquid.

如果你使用的是锥形的滤纸，将它放置在足够大容器的空管上。

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Then they developed the pictures and loaded them onto three different projectors, one with a red filter over the lens, one with green, and one with blue.

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In addition, 6 of the 12 RadNet monitors we sampled had gone over 8 weeks without a filter change, and 2 of those for over 300 days.

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Then put this in your cool gizmos file: A cheap filter that fits over a conventional monitor or television set and displays very good 3D images.

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