Experiment of December 17, 2016:

The time to submit an answer is over. You can now view the solution of the experiment.

Solution video:

For technical reasons you need to click twice to first load the video and then start playing it.

Experiment:

Question:

Does the experiment also work when you take sparkling water instead of tap water?

A) Yes, it works with sparkling water just as well as with tap water.

B) Yes, but only for a minute, then the CD cover falls off.

C) No, not at all (max. 2 seconds).

D) Only if the glass is filled less than half full with sparkling water.

Advice of the day:

Today, the instruction are important. If possible, please use a CD case. If you do not have that, you can also use other objects with flat und nearly perfectly smooth surface. Beer mats are not the best choices today.