Determination of the Planck constant in the Kibble balance experiment requires, among other things, a precise control and knowledge of the speed and position of its major sensor: a coil immerged in a magnetic field. This paper presents our method to measure the coil unwanted angular movements ...
Serendipitously, the Kibble balance experiment is carried out in two modes, the force and velocity mode, see below. In one the current needs to be measured in the other the voltage. The product of current and voltage is just formed numerically in the data analysis. One speaks of virtual ...
The magnet system in a Kibble balance and the coil-current effect. (a) presents the major elements in the fourth generation Kibble balance experiment at NIST. The left subplot of (b) is the sectional view of a typical permanent magnet system with symmetry, where the color map denotes the ...
We present a summary of the Planck constant determinations using the NRC 21 watt balance, now referred to as the NRC Kibble balance. The summary includes a 22 reanalysis of the four determinations performed in late 2013, as well as three new 23 determinations performed in 2016. We also ...
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KRISS Kibble balancemass measurementIn the revised international system of units (SI), the kilogram is realized through methods linking mass to the Planck constant such as the Kibble balance experiment and x-ray crystal density method. We report on the first experiment for kilogram realization at ...
A recent study conducted in the Kibble balance group at the Bureau International des Poids et Mesures (BIPM) showed that the coil current could significantly affect the magnetic profile, which should be carefully taken into account in the Kibble balance experiment. This paper gives a deeper ...
Kibble balance, also known as Watt balance, is an important instrument to measure a newly defined 'Kg', which is derived from Planck's constant. In the KRISS Kibble balance, difference between gravitational force and electromagnetic force is measured by a weighing cell. To lower the uncertainty...
The novel dynamical measurement procedure developed for Kibble Balance Experiment in Turkey poses the advantage of being less sensitive to the environmental disturbances. Precise displacement measurements between the coil suspended from a balance and the surrounding magnetic circuit are vital to reach the ...
The diameter and length of 15 wet and dry kibbles were measured twice with a digital caliper and averaged, then these were weighed on an analytical balance (Ohaus, Explorer: E1RW60, OHAUS, Parsippany, NJ) to calculate kibble density and expansion indices. Kibble volumetric expansion index (...