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DOC.
62
399
Doc. 62
"Discussion"
following
lecture version of Fritz
Hasenöhrl,
"On
the Transformation of Kinetic
Energy
into
Radiation"
[Physikalische
Zeitschrift
10
(1909):
830]
[1]
Einstein:
Of
course,
in this
case
the irregular fluctuations
would be
exactly such
that Maxwell's distribution
law would
be
maintained, i.e., that
the
damping
would be
compensated
by
the irregular
impacts.
Lecturer:
I
am
not
sure
that
I
understand
you
correctly.
You
mean,
if
you
think
of
a
closed
container,
and
particles
are moving
in
it,
that
they
wouldn't
be
damped by
radiation
at
all?
Einstein: That's right.
Lecturer: I
am
getting
noticeable
damping
of
motion only
after
a
practically infinite time.
Planck:
The
two
gentlemen
start
out
from
different
assumptions.
The
lecturer considers
an
entirely uniform radiation intensity, while
Mr.
Einstein
considers radiation
fluctuations,
and
therefore
he
also
gets
fluctuations in
the resulting
effects, i.e.,
not
a
complete
damping.
[3]
[2]