Decades: 820s 830s 840s 850s 860s - 870s - 880s 890s 900s 910s 920s
Years: 867 868 869 870 871 - 872 - 873 874 875 876 877
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... Contents Dennis Gabor Dennis Gabor (Gábor Dénes) (1900-1979) was a Hungarian physicist. He invented holography in 1947, for ...