<s>
The	O
Transition	O
Matrix	O
Method	O
(	O
T-matrix	B-Algorithm
method	I-Algorithm
,	O
TMM	O
)	O
is	O
a	O
computational	O
technique	O
of	O
light	O
scattering	O
by	O
nonspherical	O
particles	O
originally	O
formulated	O
by	O
Peter	O
C	O
.	O
Waterman	O
(	O
1928	O
–	O
2012	O
)	O
in	O
1965	O
.	O
</s>
<s>
T-matrix	B-Algorithm
method	I-Algorithm
proves	O
to	O
be	O
highly	O
efficient	O
and	O
has	O
been	O
widely-used	O
in	O
computing	O
electromagnetic	O
scattering	O
of	O
single	O
and	O
compound	O
particles	O
.	O
</s>
<s>
The	O
T	O
matrix	O
can	O
be	O
found	O
with	O
methods	O
other	O
than	O
null	O
field	O
method	O
and	O
extended	O
boundary	O
condition	O
method	O
(	O
EBCM	O
)	O
;	O
therefore	O
,	O
the	O
term	O
"	O
T-matrix	B-Algorithm
method	I-Algorithm
"	O
is	O
infelicitous	O
.	O
</s>
<s>
Improvement	O
of	O
traditional	O
T-matrix	O
includes	O
Invariant-imbedding	O
T-matrix	B-Algorithm
Method	I-Algorithm
(	O
IITM	O
)	O
by	O
B	O
.	O
R	O
.	O
Johnson	O
.	O
</s>
