Measurements of the Influence of Acceleration and Temperature of Bodies on their Weight

Dmitriev, A. L.

doi:10.1063/1.2844956

Cited by 8 publications

(10 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Over the nearly 12 hours of measurement time, this results in a maximum error for the temperature coefficient of < 5.1×10 −9 K −1 , which is an order of magnitude higher than the error bar of the linear regression analysis. Using this upper bound, we find α = 8.5 ± 5.1 × 10 −9 K −1 for copper, which is close to three orders of magnitude below the value reported by Dmitriev et al [4,5] (measured at a higher temperature range of 300-350 K). Given the error bars, we conclude that no change in weight of our copper sample was observable within our resolution between a temperature range of 84-230 K. A similar analysis was done for the superconductor samples but with less accuracy which is summarized in Table 1.…”

Section: Test With Copper Sample and Lnsupporting

confidence: 79%

Measuring the dependence of weight on temperature in the low-temperature regime using a magnetic suspension balance

Plesescu

Seifert

2009

Meas. Sci. Technol.

View full text Add to dashboard Cite

A novel setup was developed that allows to cool samples close to liquid helium temperatures, measure their exact temperature and determine their weight in a buoyancy-free environment along a wide temperature range using a magnetic suspension balance. This allows for the first time to accurately determine the weight of both high-T c (BSCCO and YBCO) and low-T c (Nb) superconductors during their phase transition. Our data allows to put limits on possible weight changes over temperature (α < 2×10 −8 K −1 for copper) as well as violations of the weak equivalence principle for superconductors while passing their critical temperature (η < 2 × 10 −3).

show abstract

Section: Test With Copper Sample and Lnsupporting

confidence: 79%

Measuring the dependence of weight on temperature in the low-temperature regime using a magnetic suspension balance

Plesescu

Seifert

2009

Meas. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…Thus of acceleration of particles at their vertical oscillations by an infinite set of derivatives on time from linear displacement are described. As it was marked in (Dmitriev, 2001(Dmitriev, , 2008a(Dmitriev, , 2009a) in these conditions it is possible to expect display of "nonclassical" properties of gravitation which mentioned some more D.Mendeleev . Free falling of masse oscillated along a vertical physically essentially differs from circular (orbital) movement of such masse.…”

Section: Free Falling Of a Mechanical Rotor With A Horizontal Axismentioning

confidence: 79%

Dynamic Weighing Experiments—The Way to New Physics of Gravitation

Dmitriev¹,

Nikushchenko²,

Bulgakova³

2010

AIP Conference Proceedings

View full text Add to dashboard Cite

Dynamic weighing is a measuring of size of the average gravity force acting on a test body which is in the state of accelerated movement. The acceleration of a body, or its microparticles, can be caused both by forces of gravitation, and by a direct, electromagnetic in nature, influence on the part of other bodies. It is just dynamic weighing of bodies which is informative in studying the features of electromagnetic and gravitational forces interaction. The report gives a brief review of results of experiments with weighing of accelerated moving bodies-in case of shock phenomena, in state of rotation, and in heating. Special attention is given to measurements of free fall accelerations of a mechanical rotor. In majority of the laboratory experiments executed with the purpose of checking the equivalence principle, the axis of a rotor was oriented verticallly. In our experiment we measured the free fall accelerations of the closed container inside which a mechanical rotor (gyroscope) with a horizontal axis of rotation was installed. There was observed an appreciable, essentially exceeding errors of measurements increase of acceleration of free falling of the container at angular speed of rotation of a rotor up to 20 000 rev/min. The physical conditions of free vertical falling of a body essentially differ from conditions of rotary (orbital) movement of a body in the field of gravity and the result obtained by us does not contradict the results of measurements of a gyroscope precession on satellites. Experiments with dynamic weighing of bodies give useful information on complex properties of the gravity force which are beyond the scope of well-known theories. Their careful analysis will allow to expand and supplement the concepts based on the general theory of relativity, and probably to open a way to new physics of gravitation and to new principles of movement.

show abstract

“…The majority of these measurements were taken in a normal laboratory conditions, thus influence of artifacts -buoyancy (buoyancy force of pushing out in the atmosphere), temperature change of the sizes of a sample, thermal air convection, action of electric and magnetic fields were carefully considered. Various types of high-precision scales, various designs of the weighed containers, various materials of samples and various methods of their heating were used (ultrasound, a heat transfer from the electric heater and a chemical way) (Dmitriev, 2007;Dmitriev, 2008;Dmitriev, 2012a). One of the recent experiments showing negative temperature dependence of weight is described in (Dmitriev & Bulgakova, 2013).…”

Section: Temperature Dependence Of Gravity Forcementioning

confidence: 99%

“…Out of areas of change of phase structure of substance in which there are sharp changes of its weight, the main reason for the monotonous increasing temperature dependence of weight is considered action of forces of buoyancy. Meanwhile, physical temperature dependence of weight of bodies (Dmitriev, Nikushchenko, & Snegov, 2003;Dmitriev, 2007;Dmitriev, 2008;Dmitriev, 2012a;Dmitriev & Bulgakova, 2013) has essential impact on measurements of weight and has to be taken into account in the exact thermogravimetric analysis; this circumstance was noted by Grumazesku (2015).…”

Section: Introductionmentioning

confidence: 99%