A Measurement Standard. . .
A kilogram is currently defined by a standard cylinder of platinum-iridium alloy which is kept at the International bureau of weights and measures near Paris, France. On May 20th of this year a new definition will replace the platinum-iridium artifact association. The new definition will be: taking the fixed numerical value of the Planck constant h to be 6.62607015×10−34 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 ΔνCs. A second is defined as the amount of time a cesium-133 atom takes to vibrate 9,192,631,770 times. A compass points to the magnetic pole of the earth to determine the direction north. A meter is defined as 1,650,763.73 wavelengths of orange-red light, in a vacuum, produced by burning the element krypton-86. In each of these cases, a measurement is determined by something outside of what is being measured. . . something independent of the measurer. Where am I going with this? For t...