Discussion Forum
Que.  Heisenberg gave his concept in 
a.  1923 
b.  1927 
c.  1980 
d.  1990 
Correct Answer:1927

Que.  Heisenberg gave his concept in 
a.  1923 
b.  1927 
c.  1980 
d.  1990 
Correct Answer:1927
