<s>
A	O
hodoscope	B-Algorithm
(	O
from	O
the	O
Greek	O
"	O
hodos	O
"	O
for	O
way	O
or	O
path	O
,	O
and	O
"	O
skopos	O
"	O
an	O
observer	O
)	O
is	O
an	O
instrument	O
used	O
in	O
particle	B-Algorithm
detectors	I-Algorithm
to	O
detect	O
passing	O
charged	O
particles	O
and	O
determine	O
their	O
trajectories	O
.	O
</s>
<s>
Hodoscopes	B-Algorithm
are	O
characterized	O
by	O
being	O
made	O
up	O
of	O
many	O
segments	O
;	O
the	O
combination	O
of	O
which	O
segments	O
record	O
a	O
detection	O
is	O
then	O
used	O
to	O
infer	O
where	O
the	O
particle	O
passed	O
through	O
hodoscope	B-Algorithm
.	O
</s>
<s>
As	O
an	O
example	O
:	O
a	O
simple	O
hodoscope	B-Algorithm
might	O
be	O
used	O
to	O
determine	O
where	O
a	O
particle	O
crossed	O
a	O
plane	O
or	O
a	O
wall	O
.	O
</s>
<s>
Hodoscopes	B-Algorithm
are	O
some	O
of	O
the	O
simplest	O
detectors	O
for	O
tracking	O
charged	O
particles	O
.	O
</s>
<s>
In	O
applications	O
where	O
the	O
spatial	O
resolution	O
is	O
very	O
important	O
,	O
hodoscopes	B-Algorithm
have	O
been	O
superseded	O
by	O
other	O
detectors	O
such	O
as	O
drift	O
chambers	O
and	O
time	B-Algorithm
projection	I-Algorithm
chambers	I-Algorithm
.	O
</s>
