Mass Matters

@mrmhead Said

Changing of the Kilogram

Meet the new Kilo!

The new definition being proposed is based on the Planck constant -- a constant observed in the natural world, which is inherently stable, according to the NPL.
Although the value of the kilogram will not change, the redefinition of the kilogram using a constant will ensure it remains reliable, and enable far more accurate mass measurements in the future.
The Planck constant describes the behavior of particles and waves on the atomic scale and depends on three units: the meter, kilogram and second. As the second and meter are measured and defined by the speed of light, they can be used with the fixed Planck constant to define a kilogram.

Same as the old Kilo.

To some, it matters.
To the masses, it doesn't.

@mrmhead Said

Changing of the Kilogram

Meet the new Kilo!

The new definition being proposed is based on the Planck constant -- a constant observed in the natural world, which is inherently stable, according to the NPL.
Although the value of the kilogram will not change, the redefinition of the kilogram using a constant will ensure it remains reliable, and enable far more accurate mass measurements in the future.
The Planck constant describes the behavior of particles and waves on the atomic scale and depends on three units: the meter, kilogram and second. As the second and meter are measured and defined by the speed of light, they can be used with the fixed Planck constant to define a kilogram.

Same as the old Kilo.

To some, it matters.
To the masses, it doesn't.