1:16:02
Marie's fingers healed.
1:16:05
And though
they did not find a way
1:16:06
to separate radium and barium
in a single process
1:16:09
they did discover a method of
removing barium
1:16:12
little by little in
infinite decimal amounts.
1:16:16
Working on the theory
1:16:17
that once the whole of the barium
is removed
1:16:19
nothing could be left but radium.
1:16:35
Here we see the sort of
things they had to do.
1:16:37
This is called crystallization.
1:16:40
When the liquid evaporates
crystals are left.
1:16:43
This was the thing they had to
do over and over again.
1:17:05
It proved to be the most exacting
1:17:07
of all of the stages
of their long test.
1:17:10
For it continues for two years
1:17:12
and require thousands of
separate operations.
1:17:15
By now the residue
1:17:16
from all the various processes
they had worked at lay
1:17:20
in hundreds of
this small evaporating bowls.
1:17:23
Small, because larger quantities
would not evaporate so quickly.
1:17:27
Crystallizing
and re-crystallizing.
1:17:31
Each operation
they hope bring them
1:17:33
closer and closer to the heart of
the great mystery.
1:17:38
At last, they arrive
at the final crystallization
1:17:41
the one that contains the concentrated
results of all the others.
1:17:46
The last survivors out of
those hundreds of evaporating bowls.
1:17:59
I think I feel like crying