Question: what was your favourite experiment you have ever done?

Aggelos Zacharopoulos answered on 13 Nov 2012:

@orlaithennis
We can test in the laboratory but my favourite experiments involve being out on a sunny day testing a solar collector. My most favourite experiment was when I set up a collector at the in Greece last year. The collector was set up in the middle of public space where a lot of children were playing. They all became very interested on the experiment, asked loads of questions and were trying to actually feel the hot water produced by the collector. It was great to see them so inquisitive and excited. Once the hot water turned to steam I had to try and keep them away from the collector 🙂