ir4
k
t
=
its.
71
Now
we
set
up
the
experimental
series
TT2 K
2,1
ti1
"
4£o
e
ff"pcz»
^
z2

t.
=
At
7T* ir'pzK
7T
7T
K
t,
=
At
TT
pZ
7T
... =
7T
We
choose that the time intervals be of equal magnitude and as
numerous as
possible.
We
now
have
t
n
It also
can
easily
be
seen
that
t1
=
,t2
= '
t3...
=
(constant)m.
m m
+
1
m+2
This conclusion
provides
us
with
a means
to test the
validity
of the
theory
in the most simple
way.
For the
determination
of
k
we
have
z z
e
n /?
+1
=
Constant.
712
K
*1
=
^
pc
..
,
t
. .
7T2
K
=
^
P^
The time interval
zlz can
be chosen
arbitrarily
from
the
experimental
series. If Az is
taken
as
the time between
2
readings,
then from
n+1
observations
one
obtains
n
equations for the determination
of
k.
The definitional units for
k are
minute
cm
1° Celsius
1 gr
Az R
c
p
For the measurement
we use
the electrical
procedure
with the
application
of
a
fine solder point.
Let
A
and B be the solder
points
37
PC
z3
n+1