Bill:

Perhaps even more interesting is another characteristic of water. Most things, as they get colder, become smaller in size though of course retaining the same mass. A red-hot iron ring will contract around a wooden wheel to become so tight the spokes creak in protest.

Water is like this down to 4 degrees Centigrade. It's at that point that water is its densest. But as you cool the water further towards zero Centigrade, it actually expands in size! I cannot remember the chemistry/physics reason why this is so, but 'tis true. In fact, the gram was at one time defined as a cubic centimeter of water at the temperature of 4 Centigrade because that way everyone can determine exactly what a gram is.

Or should I have been saying Celcius?

TEd


TEd