I should perhaps explain what T-jump means. 'T' is for temperature, and temperature jump means we jump the temperature within a microsecond by 10 degrees centigrade, or anything you like. We do so by rapidly heating electrically the solution, and then we look with some optical method, either light absorption, or fluorescence, or polarimetry... so using polarised light.
[Q] That means that you have added a dye molecule, indicator, just to...
Well, if you study things like haemoglobin you have already a nice dye in there, but the same is true for many of the enzymes when you add certain material. So there is no difficulty at all and we will certainly later talk about those reactions when we go on.
[Q] And the T-jump were also those machines which were built and people could take along home to their own laboratories?
Yes.
[Q] The other more sophisticated machines just were available in the Bunsenstraße.
Yes.
[Q] Bunsenstraße was the old institute.
But by then we had about ten machines standing there, and we had many people in our laboratory who came for a longer or shorter visits, did some measurements with us and... that was the time of the '60s. You see, we went through several periods, and there were several waves of visitors. First the inorganic chemists, then of course with all the reactions of proteins, you have acid base catalysis, so we came into organic chemistry and then finally, once you are in organic chemistry you are not far from biochemistry, and as I said before the enzymes and the more complicated reaction networks were the best objects for such studies of what we call relaxation spectrometry.
