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820s

Centuries: 8th century - 9th century - 10th century

Decades: 770s - 780s - 790s - 800s - 810s - 820s - 830s - 840s - 850s - 860s - 870s

Years: 820 821 822 823 824 825 826 827 828 829


Events:

Important people:



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Dennis Gabor

...     Contents Dennis Gabor Dennis Gabor (Gábor Dénes) (1900-1979) was a Hungarian physicist. He invented holography in 1947, for whic ...

 
 
 
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