The traditional solution of adding a capped length of copper pipe (above) works by trapping a bubble of air that acts as a shock absorber for the back pressure. But it only works for a while.

2. Tilt the cup and slowly pour the soda down the inside of the cup to make as few bubbles as possible. 3. Place a straw in the soda and look at the straw from the side. 4. Take the straw out of the ...

"Are all of the angles the same?" "Can you blow a bubble inside another bubble?" To make a cubic frame, fold a pipe cleaner to give it three loops. Put one piece of straw on each loop. This ...