Klaus Roth

Berlin blue

His birth and his betrayal

online lecture by Klaus Roth on October 11, 2022, 3 p.m

Moderator: Wolfgang Gerhartz

Around 1700 the bear was tap-dancing in Berlin. Bright minds were recruited from all over Europe and flocked to the city. They were welcome, they were not asked about their religion, they were allowed to try their luck. In this colorful start-up scene, a few alchemists made a discovery of the century with Prussian blue. The founded startup company flourished and the whole business plan consisted of a top secret recipe. The future of the company seemed secure, but only a few years later the whole manufacturing process was suddenly and unexpectedly published in all details in the Philosophical Transactions of the English Royal Society. It was common betrayal and the search for the culprit dragged on for 300 years. The case was finally closed recently. 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 send an e-mail to Prof. Roth; 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

Moderator: Wolfgang Gerhartz

Every year around the first Advent, many local kitchens are transformed into small bakeries in which biscuits and other baked goods are made together. Then the scent of freshly baked Christmas cookies, cinnamon stars, stollen and gingerbread wafts through the living room. No other festival is so closely associated with smells as Christmas and this sensory impression remains in our blissful memories for the rest of our lives. Let's pick up the scent trail and try to fathom the chemical basis of the Christmas scent. The effort is rewarded, because with our new knowledge, the Christmas treats are guaranteed to taste even better.

Did you like the lecture ? Or will you be unable to hear the lecture ? Then send an e-mail to Prof. Roth; he will be happy to provide you with the slides of his presentation.

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last modified: 16.07.2022 11:41 H from W.Gerhartz