Evidence for the Earth gravitational shift by direct atomic-time-scale comparison

  title={Evidence for the Earth gravitational shift by direct atomic-time-scale comparison},
  author={L. Briatore and Sigfrido M. Leschiutta},
  journal={Il Nuovo Cimento B (1971-1996)},
SummaryOn the basis of the height difference between the CNR cosmic-ray laboratory at Plateau Rosa, 3500 m, and Turin, 250 m above s.l., a direct measurement of the terrestrial gravitational shift has been made by the comparison of the time scales of two cesium beam atomic frequency standards of the Istituto Elettrotecnico Nazionale «Galileo Ferraris». The principle of equivalence predicts the effect Δt/t=−ΔU/c2=3.54·10−13, corresponding to the gain of the standard at mountain altitudes Δt/t=30… Expand
Relativistic effects on time scales and signal transmission
The current view of space-time chronometry is reviewed in its different elements, clock transport and the ‘twin paradox,’ the effect of a gravitational field, and the Doppler effect. In this view aExpand
Chronometric Geodesy: Methods and Applications
The theory of general relativity was born more than one hundred years ago, and since the beginning has striking prediction success. The gravitational redshift effect discovered by Einstein must beExpand
Chronometric measurement of orthometric height differences by means of atomic clocks
We report on the experimental results of testing a new physical method of determination of the gravitational potential differences and orthometric heights by measuring the relativistic effect ofExpand
The Gravitational Red-Shift
The discovery of emission and absorption of γ rays free of thermal Doppler broadening and the effects of recoil by R.L. MOSSBAUER [3.1] brought to experimental physics a tool that has been used toExpand
Theories of gravity and experimental tests in the post-newtonian limit
The postulates upon which is founded general relativity (in particular the principle of equivalence) are in fact the underlying foundations of a large class of competing theories, the so-calledExpand
A critical analysis of the concept of time in physics
This paper puts forward a broad critical analysis of the concept of physical time. Clock effect is conceived as a consequence of the variation of the gravitational or pseudo gravitational potential,Expand
Teaching the gravitational redshift: lessons from the history and philosophy of physics
The equivalence principle and the notion of an ideal clock running independently of acceleration suggest that clocks are unaffected by gravity. The apparent contradiction with the gravitationalExpand
A study of clock effects in Newton–Maxwell formalism
Abstract Many measurements on the time gain/loss of the atomic clocks orbiting the spinning Earth have been done. The time gain/loss of the atomic clocks orbiting the spinning Earth is calledExpand
A fiber link for the remote comparison of optical clocks and geodesy experiments
Differential comparisons of distant optical clocks with uncertainties in the 10-18 level linked by phase-stabilized optical fibers can be used to probe the Geoid potential at the centimeterExpand
0 Ja n 20 07 A relativistic quantum theory of gravity
A relativistic quantum theory of gravity is proposed in which the gravitational interaction between particles is represented by distanceand velocity-dependent potentials. The Poincaré invariance, theExpand


On Experimental Tests of the General Theory of Relativity
This paper explores the extent to which the three “crucial tests” support the full structure of the general theory of relativity, and do not merely verify the equivalence principle and the specialExpand
The equivalence of inertial and passive gravitational mass
Abstract Torsion balance measurements of the difference in ratios of gravitational to inertial mass for different materials have been carried out, confirming to higher precision the null resultsExpand
Around-the-World Atomic Clocks: Predicted Relativistic Time Gains
During October 1971, four cesium beam atomic clocks were flown on regularly scheduled commercial jet flights around the world twice, once eastward and once westward, to test Einstein's theory ofExpand
Apparent Weight of Photons
The effect of gravitational potential on the apparent frequency of electro-magnetic radiation was measured by using the sharply defined energy of recoil-free 14.4kev gamma rays emitted by Co/sup 57/Expand
Areas of Promise for the Development of Future Primary Frequency Standards
This paper discusses possibilities which may lead to the development of future primary frequency standards of superior accuracy capability. Aspects of costs and field-usage are totally neglected. AExpand