Question 1

Why does wine rise through water and the two liquids swap without mixing in Galileo’s setup?

Accepted Answer

The described experiment shows a surprising non-mixing barrier and final exchange of positions. The text emphasizes that, despite being well known, the phenomenon lacks a simple explanation, raising questions about what prevents mixing between very similar liquids.

Question 2

How does warm water compare with cold water regarding freezing speed, and why isn’t the effect always reproducible?

Accepted Answer

Warm water (around 90°C) can freeze more rapidly than cold water (around 25°C). The text states the outcome depends on many factors affecting warming, including dissolved gases release and variations in superficial evaporation, making repetition not guaranteed.

Question 3

What does “water memory” refer to in the document?

Accepted Answer

Water is described as retaining the energetic/entropic itinerary experienced during warming. After splitting water into frozen and boiling portions and returning both to ambient temperature, slight but significant differences in electric conductivity are reported.