Demonstration of the exponential decay law using beer froth
Abstract
The volume of beer froth decays exponentially with time. This property is used to demonstrate the exponential decay law in the classroom. The decay constant depends on the type of beer and can be used to differentiate between different beers. The analysis shows in a transparent way the techniques of data analysis commonly used in science - consistency checks of theoretical models with the data, parameter estimation and determination of confidence intervals.
- Publication:
-
European Journal of Physics
- Pub Date:
- January 2002
- DOI:
- 10.1088/0143-0807/23/1/304
- Bibcode:
- 2002EJPh...23...21L