Abstract
LET s, Fig 1, be a slit through which light passes, falling on R, a mirror free to rotate about an axis at right angles to the plane of the paper; L, a lens of great focal length, upon which the light falls, which is reflected from R. Let M be a plane mirror, whose surface is perpendicular to the line R M, passing through the centres of R, L, and M, respectively. If L be so placed that an image.of s is formed on the surface of M, then, this image acting as the object, its image will be formed at s, and will coincide point for point with s.
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Experimental Determination of the Velocity of Light 1 . Nature 21, 94–96 (1879). https://doi.org/10.1038/021094a0
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DOI: https://doi.org/10.1038/021094a0