Abstract
IN the interesting article on “Photography of Diffraction and Polarisation” published in the issue of NATURE for August 7, the writer describes various means of producing diffraction effects. It may possibly interest some readers of NATURE to know that beautiful fringes may be seen with even simpler apparatus than that described in the article referred to. All that is required is an ordinary folding foot-rule, preferably of ivory. To see diffraction bands by its means, it is only necessary to close the two halves of the rule until they are almost in contact and then to fold them over. On looking at the sun or other bright source of light through both slits, a series of brilliant diffraction bands will be seen.
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HALL, W. Simple Means of Producing Diffraction Effects. Nature 66, 416 (1902). https://doi.org/10.1038/066416c0
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DOI: https://doi.org/10.1038/066416c0
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