A temperature-dependent G is one example, and this and others will be explored.doi:10.1007/978-94-010-0347-6_7George T. GilliesC. S. UnnikrishnanSpringer Netherlands. Quantum Physics-Motivated Measurements and Interpretation of Newtonian Gravitational Constant. In: Advances in the Interplay between Quantum and Gravity Physics. Ed. P...
where G is the gravitational constant, r is the radius vector drawn from one MP to another being equal in absolute value to the distance between them. These forces govern the interaction between the heavenly bodies. A body on the Earth's surface (r = R, i. e., R is the distance betw...
The spectra of white-dwarf stars provide a framework for exploring phenomena beyond the Standard Model of cosmology and particle physics. This framework helps identify contemporary variations in several fundamental constants, including the fine-structure constant (α), the proton-to-electron mass ratio ...
work done – The energy transferred when a force moves its point of application. * ? Boardworks Ltd 2015 Boardworks A-level Physics Year 2 Gravitational Fields Part 5 * ? Boardworks Ltd 2015 Boardworks A-level Physics Year 2 Gravitational Fields Part 5 * ? Boardworks Ltd 2015 Boardworks A-...
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where G is the gravitational constant, and H0 and Ωm,0 are the present values of the Hubble parameter and the matter density fraction, respectively. Here we adopt the best-fit values from the Planck data (H0, Ωm,0) = (67.27 km s−1 Mpc−1, 0.3156)10. Given the...
in Fundamental Theories of Physics 87–130 (Springer, 2019). Speake, C. & Quinn, T. The search for Newton’s constant. Phys. Today 67, 27–33 (2014). Article Google Scholar Adelberger, E., Heckel, B. & Nelson, A. Tests of the gravitational inverse-square law. Annu. Rev. Nucl...
The surface of constant gravity potential,W0, that closely approximates mean sea level is known as thegeoid. If the constant normal gravity potential,U0, on the normal ellipsoid is equal to the constant gravity potential of the geoid, then the gravity anomaly on the geoid is the difference be...
et al. First measurement of the Hubble constant from a dark standard siren using the Dark Energy Survey galaxies and the LIGO/Virgo binary–black-hole merger GW170814. Astrophys. J. Lett. 876, L7 (2019). Article ADS Google Scholar Abbott, B. P. et al. A gravitational-wave standard ...
Indeed, challenges to Einstein’s theory emerge from observations of the universe on a large scale, with the problems of dark matter and dark energy [5], and at a more fundamental level we still don’t know how to reconcile General Relativity with the Standard Model of particle physics. In...