N k l T l w
th

ngl
nd m t important

n r n h rn
ing the
w r f l tr
t , nd hi kn wl dg
nd r

r h w

n d r d t b r v lut n r ,
t w

h d f h
tim t b
f n
r t
l u . But, hi f nd ng
l
thr t n d th fin n i l t b l t
f
w r
m n

nd h
f nd ng were u r

d nd hidden fr m public v w unt l n w.

Hi t ri ll , th t rm Tesla rin i l w
u d t d
r b ( m ng t other th ng )
rt in r v r bl
r

inv nt d by N k l T l . However, th

hr

n longer n
nv nt n l u . It w
d v l
d dur ng T l ‘ r

r h n alternating urr nt wh r the urr nt’ m gn tud
nd direction v r d

l
ll .