Centuries: 16th century - 17th century - 18th century
Decades: 1570s 1580s 1590s 1600s 1610s - 1620s - 1630s 1640s 1650s 1660s 1670s
Years: 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629
... Contents Dennis Gabor Dennis Gabor (Gábor Dénes) (1900-1979) was a Hungarian physicist. He invented holography in 1947, for which he ...