Then down to the labs, to complete our last few bits and pieces. We had a go at the full pigment spectroscopy, but with mixed results. We tried a couple of times, really grinding the leaves up hard with abrasive sand, but it always came out as a green colour and the spectroscopy showed a classic chlorophyll curve.
The the tutor gave us another idea, to mix in acid to try and release the attached molecules, and suddenly we got our nearly flat black spectrum that we wanted - hooray!
Now we had the full story. So we finished off and went up to start work on the presentation.
We broke for lunch with about half of it done (sweet and sour chicken).
Back down to the lab for a quick briefing on what happens next, and we then worked some more on our presentation. Soon had it finished and then we went to try it in the big lecture theatre.
A few more tweaks, then printed out the slides and went back to write some notes for the talk around the slides.
Tea coming up (lasagne and lemon meringue with ice cream - no soup), then - to disco or not to disco - that is the question?
Well in the end, we sat in the bar, drank and laughed a lot about presentation skills. It was a release I think from the weeks work.