Klaus Roth

Berlin blue

His birth and betrayal

online lecture by Klaus Roth on October 1st, 2022, 3 p.m. st

Moderation: Wolfgang Gerhartz

Around 1700 the bear was tapping in Berlin. Bright minds were recruited from all over Europe and poured into the city. They were welcome, you didn't ask about your religion, you let them try their luck. In this colorful founder scene, a few alchemists made a discovery of the century with Berlin blue. The startup company that was founded flourished and the whole business plan consisted of a top-secret recipe. The future of the company seemed assured, but only a few years later the whole manufacturing process was suddenly and unexpectedly published in detail in the Philosophical Transactions of the English Royal Society. It was mean treason and the search for the perpetrator dragged on for 300 years. It was only recently that the case was finally closed. Let's roll up this alchemical Berlin ?crime scene? again.

Did you like the lecture ? Or will you be unable to hear the lecture ? Then write to Prof. Roth by email; he will be happy to provide you with the slides of his presentation.

The chemical secret of the Christmas scent

online lecture by Klaus Roth on November 29, 2022, 3 p.m.

Moderation: Wolfgang Gerhartz

Every year around the First Advent, many local kitchens are transformed into small bakeries, in which cookies and other baked goods are made together. Then a scent of freshly baked Christmas cookies, cinnamon stars, stollen and gingerbread wafts through the living room. No other festival is so closely connected with smells as Christmas and this sensory impression remains in a blissful memory for a lifetime. Let's record the scent trail and try to find out the chemical basis of the Christmas scent. The effort is rewarded, because with our new knowledge, the Christmas treats are guaranteed to taste twice as good.

Did you like the lecture ? Or will you be unable to hear the lecture ? Then write to Prof. Roth by email; he will be happy to provide you with the slides of his presentation.

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last modified: 19.10.2021 11:52 H from W.Gerhartz