Lloyd's mirror
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Lloyd's mirror is an optics experiment that was first described in 1834 by Humphrey Lloyd in the Transactions of the Royal Irish Academy. Its original goal was to provide further evidence for the wave
Figure 2. Young's two-slit experiment displays a single-slit diffraction pattern on top of the two-slit interference fringes.
Young's interference experiment is any one of a number of optical experiments described or performed at the beginning of the nineteenth century by Thomas Young to demonstrate the wave theory of light.
From a book published in 1807 relating lectures given by Young in 1802 to London's Royal Institution
Title-page of Young's Syllabus of a Course of Lectures on Natural and Experimental Philosophy (1802)