The fact that the base unit is kg is irrelevant. In the case of mass, internally Mathcad has g defined. Therefore it has kg defined. It also knows that the base unit is kg, and will reduce units to that.
I don't understand why you think mmm would occur, even using your line of thinking, because m is the base unit.
Good point. When dealing with units such as kg, prefixes are usually not used, but can be denoted by x10^.
Because the unit is not kg, it's g. For large masses it's true that we don't usually see Mg, Tg, etc, but for small masses we do see mg, ng, pg, etc. And for large masses, just because it's unconventional doesn't mean it should be forbidden. Mg is a valid SI unit, and if I want to use it then it should be available.
The way to be certain that any valid unit someone wants is available, even if it is unusual (e.g. Mg), is to have all the prefixes defined, and all the base units. In this context "base" means base in terms of nomenclature, not the SI base unit. Mathcad could easily keep track of which is the SI base unit, just as it does now.
Because the unit is not kg, it's g. For large masses it's true that we don't usually see Mg, Tg, etc, but for small masses we do see mg, ng, pg, etc. And for large masses, just because it's unconventional doesn't mean it should be forbidden. Mg is a valid SI unit, and if I want to use it then it should be available.
Mg might be a valid SI unit, but I have never seen it used in Engineering before. As soon as masses reach around 1000kg they are usually described in tonne.
The way to be certain that any valid unit someone wants is available, even if it is unusual (e.g. Mg), is to have all the prefixes defined, and all the base units. In this context "base" means base in terms of nomenclature, not the SI base unit. Mathcad could easily keep track of which is the SI base unit, just as it does now.
We are archiving your idea as part of a general review. This action is based on the age of your idea and the total number of votes received, as per this announcement.
You can always post a new idea with all the details required in the form.
Thank you for your participation.
You must be a registered user to add a comment. If you've already registered, sign in. Otherwise, register and sign in.
