Gerhard Heywang

Chemistry between 6:30 a.m. and 7:30 a.m

online lecture by Gerhard Heywang on February 14, 2023 at 3 p.m

Moderator: Eva Wille

In the hour after waking up, we humans are confronted with a plethora of chemicals and chemical products: Usually in a very pleasant way! The experimental lecture illuminates the diverse facets of chemistry in the morning.

Until breakfast we encounter water, plastics and toothpaste, that's still possible, but also acetaldehyde, furfurylthiol and sotolone (components of the coffee aroma). Surfactants, fragrances and dyes are allowed to act on the body and you try to get rid of them with the bio-solvent water.

The tongue - a jack of all trades

online lecture by Gerhard Heywang on October 11, 2022 at 3 p.m

Wolfgang Gerhartz

The tongue is a very versatile organ. It helps with speaking, swallowing, chewing and many other oral activities. The tongue consists of 9 different muscles, each of which can only contract, but you can still stick out the tongue. How does it work? And how does that work when a chameleon can catapult its tongue out as far as its own body length? How does a gummy bear taste if you just put it on your tongue? Does salt always taste salty and isn't hot chili actually a bodily harm? Who can roll the tongue? And what happens with the rolling R? Overall, it's about physics, biology and chemistry in the oral cavity. The listeners are asked to have a gummy bear and a grain of salt ready.

Egg, egg, egg - interesting facts about eggs

online lecture by Gerhard Heywang on April 5th, 2022 at 3 p.m

Moderator: Eberhard Ehlers

Everyone has eaten an egg at some point ? you have probably indulged in the pleasure without thinking about the interesting questions and worth-knowing answers hidden behind eggs.

The experimental lecture deals with aspects relating to the egg and answers questions such as: Why do you need a lot of water in the egg cooker for a few eggs and little water for a lot of eggs? Why are eggs deterred? How round does the egg come out of the chicken? Which chickens lay white and which brown eggs? What is the dye in brown eggs made of? How can you tell if an egg is boiled or raw? How long does it take a chicken to produce 8g of protein for the egg? How long does it take for the shell to form? Are chickens stupid or smart? And much more.

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

Access to the lecture

Petra Schultheiss-Reimann will be happy to send you the link to the meeting. No further registration is required.

last modified: 26.10.2023 07:29 H from Translator