What gentlemen don't know about the real effects of 'beer foam'?

Men who drink beer often, have you ever thought about what beer foam is for? - A group of European researchers conducted a serious study on beer foam.

Beer foam is formed by the absorption of active substances on the surface of CO2. Beer foam is carbon dioxide bubbles in a glass of beer that appear as floating on the surface of the beer, or running along the beer glass, or existing as tiny specks on the wall of the glass.

When pouring beer out of a bottle/can, the beer foam always rises up and almost overflows from the glass, then slowly settles and dissipates but never disappears.

Illustration

Beer foam is a very important part of beer to determine the quality of the beer. A beer without foam indicates a bland and even bitter beer.

The beer foam on the top dissolves, releasing a small amount of beer into the air, creating the aroma of the beer.

Swiss physicist Dr. François Gallaire and his colleagues conducted research on beer and found something that contradicted long-held theories about the motion of liquids.

Especially as the beer sloshes around in the tank, it loses energy and becomes smaller and never stops.

Anyone who studies beer glasses knows that after the waiter puts the beer glass on the table, the beer continuously sloshes. Why is beer different from other liquids?

The answer is: Beer waves are caused by beer foam. Small waves in a glass of beer slowly descend due to capillary force and surface tension. Small waves even exist forever. That's why there is a phenomenon of beer foam remaining in a glass of beer after it has been drunk. Because of the beer foam, the beer keeps on undulating.

The team experimented with soapy water instead of beer. They found that the tiny bubbles in beer foam increased the interface between the liquid and air. So the more capillary action, the more the beer flowed.

That's why beautiful girls at the Oktoberfest beer festival in Germany can continuously carry out mugs of beer that are constantly bubbling white foam.

Does beer research have any other benefits? - Of course. The word beer can be extended to other physical applications.

For example, fuel waves in rockets or in the tanks of oil tankers can cause dangerous imbalances. A thin layer of beer foam can eliminate these unfortunate disasters.

According to VietQ.vn