Can anyone help me understand why the base SI unit of mass is the kilogram and not the gram? Why is the ×1000 prefix included in the base unit of mass, but not in any other units?
When I asked that question to my science teacher, a long time ago, he said that was because it was easier to manufacture a precise prototype kilogram than a prototype gram, and that made sense at the time, but what's the reason now?
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Can anyone help me understand why the base SI unit of mass is the kilogram and not the gram? Why is the ×1000 prefix included in the base unit of mass, but not in any other units?
When I asked that question to my science teacher, a long time ago, he said that was because it was easier to manufacture a precise prototype kilogram than a prototype gram, and that made sense at the time, but what's the reason now?