Other Jimness > Cinder Spires Spoilers
Cinder Spires Setting discussion [TAW Sample Chapter SPOILERS]
Quantus:
--- Quote from: Dina on October 19, 2015, 02:43:00 PM ---That is what I meant, Quantus.
--- End quote ---
Right. I was just also saying that, in addition to how it makes conversions easier when up and down a given unit, as you describe, there was also a lot of benefit when converting between completely different values, as when going from Length to Volume and even to Thermal energy. I was referring to the whole thing where SI is based on 7 Fundamental/Base units and how their definitions interact on a base10 as well: Length, Mass, Time, Electric Current, Temperature, Luminous Intensity, and Chemical Amount/Amount of substance (moles).
Dina:
Yes, indeed. For instance, you have Newton (kg*m/s2) or Pascal (N/m2) or Joule (N*m)
Rygar:
Actually the gram is not defined by the amount of pure water, but as 1/1000 the weight of The Kilogram and the mass of the International Kilogram Prototype possibly being off is a matter of some concern. It is the only Metric measurement still constrained by being derived from a physical artifact.
Dina:
But it is the weight of a litre of pure water in standard conditions. I still like the "metro patron" (the concrete stick that was the international pattern for the metre)
Quantus:
--- Quote from: Rygar on October 20, 2015, 04:14:40 PM ---Actually the gram is not defined by the amount of pure water, but as 1/1000 the weight of The Kilogram and the mass of the International Kilogram Prototype possibly being off is a matter of some concern. It is the only Metric measurement still constrained by being derived from a physical artifact.
--- End quote ---
It was historically based on Water, that's how they originally defined it, even though now it's defined by a specific block of platinum alloy. All of them are like that. The meter used to be based on the earth's size but is now a derivative of the speed of light in a vacuum and a calculated fractional second, and even the Second is now defined by the decay of a caesium 133 atom instead of anything to do with the earth's rotation.
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