diff --git a/content/_index.md b/content/_index.md
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--- a/content/_index.md
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@@ -15,6 +15,8 @@ Other data are calculated with this quantities With the following equations :
 <div>$$ E_\text{Adia} \simeq \frac{E_{Abs}+E_{Fluo}}{2}\ $$</div>
 <div>$$ E_\text{0-0} \simeq E_\text{Adia}-E_\text{ZPE} $$</div>
 
+{{< figure src="/images/figure-geom-1.png" title="Figure 1" caption="Representation of transition energies and energy differences" >}}
+
 [Watch one dataset]({{< ref "onedataset.html" >}})
 
 Useful links
diff --git a/static/images/figure-geom-1.png b/static/images/figure-geom-1.png
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