National Repository of Grey Literature 4 records found  Search took 0.01 seconds. 
Selected Elementary Phenomena in the Beer Foam
Novák, Pavel ; Baszczyňski, Martin ; Brányik, T. ; Růžička, Marek ; Drahoš, Jiří
This work contains a brief summary of the theoretical knowledge of the physics of foam. The practicalities, I studied the impact of positive (protein) and negative (salts) surfactant on the bubble terminal velocity and bubble coalescence time with surface.
High-speed Imaging of Beer Foam Formation: Effect of Surfactants
Novák, Pavel ; Baszczyňski, Martin ; Brányik, T. ; Zedníková, Mária ; Růžička, Marek ; Drahoš, Jiří
In this experimental study we developed a visualization method based on the high-speed imaging technique. The method consists of application of high-speed digital camera and image analyzing software. The method is suitable for investigating the mechanism of bubble formation (nucleation) and collision of bubbles with liquid surface. The supression of bubble coalescence, whence foam formation, was tested on different samples of model liquids and beers differing in surfactant content.

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