>>Naomi,
>>
>>>For water it's 1m*1m*1m = 1kg, if my memory serves me right.
>>
>>The original definition of a kilogram = the mass of 1 liter of water at 0 degrees C.
>WRONG!
>It's at 4 degrees Celsius! at that temp the water is the lightest. :-)
Not lightest: heaviest, or, more accurately, densest.
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)