On 2007 May 6 , at 5:22 PM, STANLEY DOORE wrote:
I did not mean to indicate that one liter of everything weighs one kilogram; I think most people understand this when they are in grocery stores and they buy a bag of sugar, a jar of marshmallow fluff or something else.
I know for a fact that not everyone really understands that. Yes, they CAN understand that the mass of a litre is different for different materials but they sometimes DON'T. They don't stop to think about it and blithely go off assuming that a litre of anything has a mass of one kilogram unless someone is on hand to catch their mistake.
I think it behooves us always to qualify our statements about a a litre of water having a mass of one kilogram by emphasizing that this is only for water (and things that are composed mostly of water). It may need to be stated only once in any discussion, but it should be said at least once.
Regards, Bill Hooper Fernandina Beach, Florida, USA ========================== SImplification Begins With SI. ==========================
