Centuries: 3rd century - 4th century - 5th century
Decades: 340s - 350s - 360s - 370s - 380s - 390s - 400s - 410s - 420s - 430s - 440s
Years: 390 391 392 393 394 395 396 397 398 399 400
... Wikipedia <<Up Contents Dennis Gabor Dennis Gabor (Gábor Dénes) (1900-1979) was a Hungarian physicist. He invented holography in 1947, ...