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Can you give details?vanhees71 said:in May we'll indeed define the underlying mass unit kg, precisely by just counting particles, but that's another story
Can you give details?vanhees71 said:in May we'll indeed define the underlying mass unit kg, precisely by just counting particles, but that's another story
I personally think that these mise en pratique are a fantastic idea. The definition of the SI no longer depends on the specific experiment, but as better experimental techniques become available we can simply update the mise en practique as a new recognized method of realizing the standard to a specified and known accuracy! I had heard about them, but I did not know that drafts were already published.vanhees71 said:mise en practique
vanhees71 said:and for the realization ("mise en practique") of the new kg definition:
Please, that's pratique, without a c.Dale said:I personally think that these mise en practique are a fantastic idea.
vanhees71 said:to the redefinition of the Ampere
The current unit of mass is the kilogram, which is defined by a physical object known as the International Prototype Kilogram (IPK). It is being redefined because the IPK is subject to variations in mass over time, making it an unreliable standard.
The unit of mass will be redefined using a fundamental constant of nature, known as the Planck constant. This constant relates the energy of a photon to its frequency and will be used to define the kilogram in terms of a specific number of photons.
Yes, the redefinition of the unit of mass will have an impact on everyday measurements. However, the change will be very small and only noticeable in highly precise measurements.
Redefining the unit of mass will provide a more stable and accurate standard for measurements. It will also allow for greater consistency and reproducibility in scientific experiments and industrial processes.
Yes, the redefinition of the unit of mass will have a ripple effect on other units of measurement, such as the units of force and energy. These units are currently defined in terms of the kilogram, so their definitions will also need to be adjusted to align with the new definition of the kilogram.