| Will Your Pub Be Approved? The Brewer's Association of America (BAA) and the Draught Beer Guild will soon issue Draught Beer Retail Certifications. "Draft beer is the life blood of the small brewing industry", said BAA President Daniel Bradford. "Making sure beer tastes as good in the glass as it does in the keg is the highest priority of our association." The BAA president went on to charge that many bars are serving beer that has been damaged by improper handling after it leaves the brewery or by poorly maintained draft lines. ----------------- |
Feature News from beernexus.com
Up or Down? Science Takes
on Guinness Bubbles!
Do they rise? Do they reamin steady? Is it an optical
illusion? Well, it's now official - Guinness bubbles
really do sink!
Scientists have finally proved that those mesmorizing
creamy bubbles that fascinate the waiting drinker of
the world's most famous stout actually flow down
instead of up.
Dr. Andrew Alexander, from the University of
Edinburgh's School of Chemistry, headed the research
team. "At first we thought the dark liquid flowing down
as a pint was poured gave the illusion the bubbles
were going down" said Dr. Alexander. "But that proved
not to be the case."
The noted scientist discovered that as a pint settles,
bubbles touching the walls of the glass experience
drag, similar to what a person feels sliding a finger
along glass, and that prevents them from floating up.
The bubbles in the middle however, are free to rise,
creating a circular flow within the glass that causes
bubbles at the edge to be pushed downwards on the
inside surface of the glass.
on Guinness Bubbles!
Do they rise? Do they reamin steady? Is it an optical
illusion? Well, it's now official - Guinness bubbles
really do sink!
Scientists have finally proved that those mesmorizing
creamy bubbles that fascinate the waiting drinker of
the world's most famous stout actually flow down
instead of up.
Dr. Andrew Alexander, from the University of
Edinburgh's School of Chemistry, headed the research
team. "At first we thought the dark liquid flowing down
as a pint was poured gave the illusion the bubbles
were going down" said Dr. Alexander. "But that proved
not to be the case."
The noted scientist discovered that as a pint settles,
bubbles touching the walls of the glass experience
drag, similar to what a person feels sliding a finger
along glass, and that prevents them from floating up.
The bubbles in the middle however, are free to rise,
creating a circular flow within the glass that causes
bubbles at the edge to be pushed downwards on the
inside surface of the glass.
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