# Blog: The Belousov-Zhabotinsky Reaction (2013-01-29)

For a
course
on reaction-diffusion equations, we (a group of mathematics
PhD students at the University of Graz)
did a kind of "project"
last week (see picture meta-data for the exact time & place
if you're interested): We met with two chemistry students at the
TU Graz, and together worked
on the famous
**Belousov-Zhabotinsky reaction**.
We explained to them how oscillations
can occur in a dynamical system
in terms of the Poincré-Bendixson
theorem. In exchange, they supervised us in actually trying out
the reaction in the lab.

For us, this was quite an interesting experience! (But I also hope our
dry mathematics were also somewhat interesting for them.)
When we had gotten our lab coats, one of my
colleagues summarised it brilliantly as:
**"Whoo! I feel like a scientist!"**
Below, you find some pictures I took during the project—but since
they are

Of course, I also recorded a
short video
(in 3x speed-up) of the reaction, although it is not as "cool"
as others on the web.
Finally, two more pictures: One of a computer measurement of
the absorbance of our solution
over time showing the oscillations,
and one of the solution exhibiting also
**spatial patterns** (with increased contrast and still
not very well visible, unfortunately).

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