Package javax.measure.quantity

Interface Mass

All Superinterfaces:
Quantity<Mass>
public interface Mass extends Quantity<Mass>
Measure of the quantity of matter that a body or an object contains. The mass of the body is not dependent on gravity and therefore is different from but proportional to its weight. The metric system unit for this quantity is "kg" (kilogram). The kilogram, symbol kg, is the SI unit of mass. It is defined by taking the fixed numerical value of the Planck constant h to be 6.626 070 15 × 10⁻³⁴ when expressed in the unit J s, which is equal to kg m² s−1, where the metre and the second are defined in terms of c and ∆νCs. This definition implies the exact relation h = 6.626 070 15 × 10−34 kg m² s⁻¹. Inverting this relation gives an exact expression for the kilogram in terms of the three defining constants h, ∆νCs and c: 1 kg = (h / 6.626 070 15 × 10⁻³⁴) m⁻² s
API Note:
SI Base Unit
Since:
1.0
Version:
2.0
Author:
Jean-Marie Dautelle, Werner Keil, Thodoris Bais
See Also: