Young worked
on a wide variety of
scientific problems, ranging
from the structure of the eye
and the mechanism of
vision to the decipherment
of the Rosetta stone He
revived the wave theory of
light and recognised that
interference phenomena
provide proof of the wave
properties of light THOMAS YOUNG (1773 – 1829)
We will have constructive interference resulting in a bright
region when xd
D
 = nl That is,
x = xn = n D
λd
; n = 0, ± 1, ± 2,