Centuries: 6th century - 7th century - 8th century
Decades: 600s 610s 620s 630s 640s - 650s - 660s 670s 680s 690s 700s
Years: 645 646 647 648 649 - 650 - 651 652 653 654 655
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... Contents Dennis Gabor Dennis Gabor (Gábor Dénes) (1900-1979) was a Hungarian physicist. He invented holography in 1947, for ...