Novel Mössbauer experiment in a rotating system: Extra energy shift confirmed

2015 ◽  
Author(s):  
A. L. Kholmetskii ◽  
T. Yarman ◽  
M. Arik ◽  
O.V. Missevitch
Keyword(s):  
Energy Shift ◽  
Rotating System ◽  
Extra Energy

scholarly journals Mössbauer experiments in a rotating system and physical interpretation of their results

2021 ◽  
pp. 34-43
Author(s):  
Alexander L. Kholmetskii ◽  
Tolga Yarman ◽  
Ozan Yarman ◽  
Metin Arik
Keyword(s):  
Energy Shift ◽  
Special Theory ◽  
Relativistic Energy ◽  
Theory Of Relativity ◽  
Rotating System ◽  
Rotating Systems ◽  
Extra Energy ◽  
Quantum Mechanical Description ◽  
Dilation Effect ◽  
The Moment

We discuss the results of modern Mössbauer experiments in a rotating system, which show the presence of an extra energy shift between the emitted and absorbed resonant radiation in addition to the relativistic energy shift of the resonant lines due to the time dilation effect in the co-rotating source and absorber with different radial coordinates. We analyse the available attempts to explain the origin of the extra energy shift, which include some extensions of special theory of relativity with hypothesis about the existence of limited acceleration in nature, with hypothesis about a so-called «time-dependent Doppler effect», as well as in the framework of the general theory of relativity under re-analysis of the metric effects in the rotating system, which is focused to the problem of correct synchronisation of clocks in a rotating system with a laboratory clock. We show that all such attempts remain unsuccessful until the moment, and we indicate possible ways of solving this problem, which should combine metric effects in rotating systems with quantum mechanical description of resonant nuclei confined in crystal cells.

Einstein’s “Clock Hypothesis” and Mössbauer Experiments in a Rotating System

2019 ◽  
Vol 74 (2) ◽  
pp. 91-100
Author(s):  
Alexander Kholmetskii ◽  
Tolga Yarman ◽  
Ozan Yarman ◽  
Metin Arik
Keyword(s):  
Energy Shift ◽  
Relativity Theory ◽  
Theory Of Relativity ◽  
Rotating Disc ◽  
Rotating System ◽  
Rotating Systems ◽  
Extra Energy ◽  
Rotor Experiment ◽  
Clock Hypothesis ◽  
The Moment

AbstractAn extra energy shift between emitted and received radiation on a rotating disc – next to the conventionally recognised second-order Doppler shift – has been revealed in a series of recent Mössbauer experiments, where a radioactive source is fixed at the centre and an absorber is attached to the rim of the rotating disc. This disclosure gives indication to a possible violation of the “clock hypothesis” by Einstein: i.e. the independence of the rate of a clock on its acceleration. At the moment, there seem to be two plausible interpretations of this result: (i) the deviation of the geometry of the rotating disc from that predicted by the general theory of relativity (GTR), or (ii) the existence of a specific maximal acceleration in nature, when transformation between two accelerated frames differs from the corresponding transformation of the relativity theory. We take a closer look at both ways leading to the violation of the clock hypothesis; particularly, by analysing the outcomes of recent experiments in rotating systems and by suggesting a new Mössbauer rotor experiment to determine the most feasible mechanism for testing the dependence of the rate of a clock on its acceleration.

scholarly journals Novel Mössbauer experiment in a rotating system and the extra-energy shift between emission and absorption lines

2016 ◽  
Vol 94 (8) ◽  
pp. 780-789 ◽  
Author(s):  
T. Yarman ◽  
A.L. Kholmetskii ◽  
M. Arik ◽  
B. Akkuş ◽  
Y. Öktem ◽  
...  
Keyword(s):  
Subject Matter ◽  
Energy Shift ◽  
Quantitative Agreement ◽  
Relative Energy ◽  
Absorption Lines ◽  
Rotating System ◽  
Extra Energy ◽  
The Subject

We present the results of a novel Mössbauer experiment in a rotating system, implemented recently at Istanbul University, which yields the coefficient k = 0.69 ± 0.02 within the frame of the expression for the relative energy shift between emission and absorption lines ΔE/E = ku2/c2. This result turned out to be in quantitative agreement with an experiment achieved earlier on the subject matter (Kholmetskii et al. Phys. Scr. 79, 065007 (2009)), and once again strongly pointed to the inequality k > 0.5, revealed originally in (Kholmetskii et al. Phys. Scr. 77, 035302 (2008)) via the re-analysis of Kündig’s experiment (Kündig, Phys. Rev. 129, 2371 (1963)). A possible explanation of the deviation of the coefficient k from the relativistic prediction k = 0.5 is discussed.

scholarly journals Comparison of traditional and synchrotron beam methodologies in Mössbauer experiments in a rotating system

2021 ◽  
Vol 28 (1) ◽  
pp. 78-85
Author(s):  
A. L. Kholmetskii ◽  
T. Yarman ◽  
O. Yarman ◽  
M. Arik
Keyword(s):  
Performance Improvement ◽  
Energy Shift ◽  
Practical Significance ◽  
Rotating System ◽  
Synchrotron Source ◽  
Compact Source ◽  
Laboratory Setup ◽  
Synchrotron Beam ◽  
Crucial Information ◽  
Resonant Radiation

Recent Mössbauer experiments in a rotating system reported by others in the literature have involved the application of synchrotron radiation onto a spinning semi-circular resonant absorber. Here, the physical interpretation of these methodologies, and their alleged performance improvement, is analyzed in the light of our own team's past experience based instead on the traditional laboratory setup. It is shown that a number of fundamental shortcomings in the approach reported in the literature deprives it of any practical significance with respect to the improvement of the technique of Mössbauer rotor experiments with a synchrotron source. It is concluded that, at present, only Mössbauer experiments relying on an ordinary compact source of resonant radiation and a resonant absorber both fixed on the rotor promise to provide crucial information with respect to the physical origin of the observed energy shift between emitted and absorbed resonant radiation in a rotating system.

The Selfish Brain: energy shift during hypoglycemia

2005 ◽  
Vol 113 (08) ◽  
Author(s):  
KM Oltmanns ◽  
UH Melchert ◽  
HG Scholand-Engler ◽  
C Guenther ◽  
B Schultes ◽  
...  
Keyword(s):  
Energy Shift ◽  
Brain Energy

Implementation of a Dual-Solver Hybrid Approach for Rotating System Simulations in HPCMP CREATE(TM)-AV HELIOS

2021 ◽  
Author(s):  
Alex Moushegian ◽  
Marilyn J. Smith ◽  
Glen R. Whitehouse ◽  
Daniel A. Wachspress
Keyword(s):  
Hybrid Approach ◽  
Rotating System

scholarly journals Overheating Risk and Energy Demand of Nordic Old and New Apartment Buildings during Average and Extreme Weather Conditions under a Changing Climate

2021 ◽  
Vol 11 (9) ◽  
pp. 3972
Author(s):  
Azin Velashjerdi Farahani ◽  
Juha Jokisalo ◽  
Natalia Korhonen ◽  
Kirsti Jylhä ◽  
Kimmo Ruosteenoja ◽  
...  
Keyword(s):  
Climate Change ◽  
Energy Demand ◽  
Energy Use ◽  
Residential Buildings ◽  
Weather Conditions ◽  
Extreme Weather ◽  
Living Room ◽  
Extra Energy ◽  
Cooling Unit ◽  
Indoor Conditions

The global average air temperature is increasing as a manifestation of climate change and more intense and frequent heatwaves are expected to be associated with this rise worldwide, including northern Europe. Summertime indoor conditions in residential buildings and the health of occupants are influenced by climate change, particularly if no mechanical cooling is used. The energy use of buildings contributes to climate change through greenhouse gas emissions. It is, therefore, necessary to analyze the effects of climate change on the overheating risk and energy demand of residential buildings and to assess the efficiency of various measures to alleviate the overheating. In this study, simulations of dynamic energy and indoor conditions in a new and an old apartment building are performed using two climate scenarios for southern Finland, one for average and the other for extreme weather conditions in 2050. The evaluated measures against overheating included orientations, blinds, site shading, window properties, openable windows, the split cooling unit, and the ventilation cooling and ventilation boost. In both buildings, the overheating risk is high in the current and projected future average climate and, in particular, during exceptionally hot summers. The indoor conditions are occasionally even injurious for the health of occupants. The openable windows and ventilation cooling with ventilation boost were effective in improving the indoor conditions, during both current and future average and extreme weather conditions. However, the split cooling unit installed in the living room was the only studied solution able to completely prevent overheating in all the spaces with a fairly small amount of extra energy usage.

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