Why do champagne bubbles only come from the bottom of the glass?

[guska]

We are discussing this over a few bubblies.

 

[MistaX]

To add another question:

Why doesn't the same rule apply to Soda?

 

[Famine]

Fun fact - bubbly drinks don't bubble because of carbon dioxide in them.

They bubble because the container (usually glass) is dirty. Condensation nuclei form on the dirt and they allow the carbon dioxide to come out of solution.

So the bottoms of your glasses are dirty. Get someone with longer hands to wash them, or get a new dishwasher.

 

[MistaX]

That doesn't explain why bottled/canned soda bubbles?

 

[sn00pie]

Fun fact - bubbly drinks don't bubble because of carbon dioxide in them.

They bubble because the container (usually glass) is dirty. Condensation nuclei form on the dirt and they allow the carbon dioxide to come out of solution.

So the bottoms of your glasses are dirty. Get someone with longer hands to wash them, or get a new dishwasher.

My glasses aren't dirty! They have irregularities.

 

[TheCracker]

The bubbles are made by irregularities on the glass surface. Crystal glass is (microscopically) rougher than regular glass therefore produces more bubbles which is one of the reasons why posh champagne glasses are made from it. Although the 'irregular surface' fact is now generally disputed.