DOC.
38
223
Element
Specific
atomic heat
Acalc.
S
and
P
Fl
O
Si
B
H
C
5.4
5
4
3.8
2.7
2.3
1.8
42
33
21
20
15
13
12
Further,
we
take
some
data
on
infrared
proper
oscillations (metallic
reflection, residual
rays)
of
some
transparent solids
from
the tables of
Landolt
and Börnstein;
the observed
A
are
listed in the table
below
as
"Aobs.";
the
numbers
under
"^calc."
are
taken
from
the
above
table if
they [31]
refer
to atoms
with
abnormally low
specific
heat;
for the others it is
assumed
that
A
48
ß.
Substance
CaFl
NaCl
KCl
CaCO3
SiO2
/obs. /calc.
24;
31.6
51.2
61.2
6.7; 11.4;
29.4
8.5;
9.0; 20.7
33;
48
48
48
12;
21;
48
20;
21
In the table,
NaCl
and
KCl
contain
only
atoms
with
normal specific
heat;
indeed,
the
wavelengths
of their infrared
proper
oscillations
are
larger
than
48
ß.
The
other substances contain
only
atoms
with
abnormally low
specific
heats
(except
for
Ca);
indeed, the frequencies of these substances
range
between
4.8
and
48
u.
In
general,
the values of
A
obtained theoretically
from
specific heats
are
considerably
larger
than those observed. It is
possible that these deviations
might
be
explained
by a
strong
variation of the
frequency
of the
elementary
structure
with its
energy.
Be
that
as
it
may,
the
agreement
of the observed
and
the calculated
A
is remarkable both with
respect to
the
sequence as
well
as
with
respect to
the order of
magnitude.
Finally,
we
will also
apply
the
theory
to
diamond.
Its infrared
proper
frequency
is
not
known,
but
can
be
calculated
on
the basis
of the
theory
described if the molecular
specific heat
c
is
known
for
some
temperature
T;