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It's all a question of density: Why do similar foods float in water while others sink to the bottom?

Time
18:00 - 24:00 o'clock
Organizer
Friedrich-Schiller-Universität Jena and Institut für Ernährungswissenschaften
Place
Campus, SR 206
Adresse
Carl-Zeiß-Straße 3

The density of food can be used to answer various questions. Using two examples, we show how you can easily draw conclusions about the sugar content of cola and the age of eggs.

Density is a physical quantity defined as the ratio of mass to volume. For example, it can indicate how heavy an object (e.g. a certain foodstuff) is for a given volume. A well-known joke question is always: "Which is heavier: 1 kg of feathers or 1 kg of lead?". Since the density of feathers is much lower than that of lead, they would therefore take up a much larger volume than lead at a weight of 1 kg.

Density can also be used to compare the sugar content of foods in a simple way. We want to show you the difference between cola and Diet Coke in an experiment. There is also a direct correlation between the ageing of hen's eggs and density. In another experiment, we want to demonstrate whether a breakfast egg can still be eaten or whether it is better to avoid it.

Note
Repetitions on the hour and half hour
 

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