Cs. Analysis of the frequency ratio, extending over six years at NIST, is used to place a limit on the fractional variation of the two clocks of less than 6 5.8 10 − × per change in normalized solar gravitational potential, and a limit on fractional variation of the fine structure co...
Fine Structure ConstantVirtual ParticlesVacuum PermittivityAn equation is given for analytically defining the value of the fine structure constant, whose derivation follows two main steps, relative to the generation of electric charges and to the polarizability of vacuum due to virtual dipoles. The obta...
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Lifetime measurements were carried out on the 5p56p-fine-structure levels 2p2, 2p4, and 2p6 of the xenon atom by beam-gas-laser spectroscopy. An accuracy of better than 1% was attained in each case. These benchmark values enable to assess the reliability of predictions of present semi-emp...
Determination of the von Klitzing Constant and the Fine-Structure Constant Through a Comparison of the Quantized Hall Resistance and the Ohm Derived from the NIST Calculable Capacitordoi:10.1088/0026-1394/35/2/3A JefferyRe ElmquistJQ Shields
ϕ is the dimensionless gravitational potential (𝜙=𝐺𝑀𝑟𝑐2ϕ=GMrc2), 𝑘𝛼kα is a dimensionless dependency parameter, M is the mass of the object, r is the radial distance from the object’s center, and 𝛼0α0 is the laboratory value of the fine structure constant. ...
The fine-tuned energies are all close to the experimental energies from the NIST database [28]. The ab initio energies, especially the energy for 2𝑠2𝑝1𝑃12s2p1P1, are rather far away from the experimental energies for the small orbital sets (𝑛=3,4n=3,4), but improve as the...
And VW is calculated as where V VW =6 =− AR1+R2 6H(R1 + R2) (2) (2) where = A = ( A11 − A33)( A22 − A33) (3) (3) where A means the Hammaker constant in vacuum. H is the separation distance. For two different wtyhpeerseoAf pmaretainclsesthweiHtharmadmiuaskeRr...