measurement
Inside the High-Tech Lab Where Scientists Are Redefining the Kilogram
The watt balance will tell us what a kilogram is.
At 125 Years Old, the Kilogram Is Approaching Retirement
The prototype kilogram we measure all mass against will soon be replaced by more constant standards.
How to Replace the Kilogram, the Last Physical Unit of Measurement
Of course, the whole anthropocentric measurement thing is rather imprecise (Can you imagine designing a microprocessor with cubits?) so, over time, we've come to define units of measurement with various mathematical constants. A meter, for example is...
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