W'S MIRROR STEREOSCOPE
\dˈʌbə͡ljˌuːz mˈɪɹə stˈɛɹɪˌə͡ʊskə͡ʊp], \dˈʌbəljˌuːz mˈɪɹə stˈɛɹɪˌəʊskəʊp], \d_ˈʌ_b_əl_j_ˌuː_z m_ˈɪ_ɹ_ə s_t_ˈɛ_ɹ_ɪ__ˌəʊ_s_k_əʊ_p]\
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A s. which consists of two plane mirrors joined together at right angles, in which are reflected the projected images corresponding to the right and left eye, which are placed at the limit of distinct vision in front of the mirrors at an angle of 45 to their reflecting surface. The two eyes then see the reflected images united at one point. [Charles Wheatstone, English physicist, 1802-1875.]
By Smith Ely Jelliffe
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