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George Russell Harrison with 10-inch diffraction grating at Alumni Officers' Conference demonstration, 1957
![](https://res.cloudinary.com/mitmuseum/image/upload/t_800/media-internal/GCP-00009890.jpg)
Description
George Russell Harrison holds a diffraction grating as he gives a demonstration in a lecture hall. Stamp on verso reads "Sep 1957". Used in: Technology Review, November 1957, p. 48. Original credit line: MIT Photo Service.
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