Dark matter and dark energy denote the gravitation of the expanding universe
Frontiers in Physics, 2022 We reason that it is the gravitation of all ordinary matter, extending from the dense distant past to the sparse present, rather than dark matter, that shows up in galaxy rotation and velocity dispersion.
Arto Annila, Mårten Wikström
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Universal dependence of the total number albedo of photons on the mean number of photon scatterings [PDF]
Nuclear Technology and Radiation Protection, 2011 This paper presents the results of research on photon reflection from plane targets based on Monte Carlo simulations performed by the MCNP code. Five materials (water, concrete, aluminum, iron, and copper) are examined in the area of initial photon ...
Ljubenov Vladan L., Simović Rodoljub D.
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Possible Simple Structures of the Universe to Include General Relativity Effects [PDF]
INCAS Bulletin, 2017 The general relativity describes the universe properties, the gravity playing a fundamental role. One uses a metric tensor in a Riemann space, g , which should be in agreement with a mass (or energy) tensor in order to satisfy the Einstein equation of
Corneliu BERBENTE, Sorin BERBENTE
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Anales (Asociación Física Argentina), 2023 In 1904, the Austrian physicist Fritz Hasenöhrl examined by means of mental experiments the black body radiation in a reflecting cavity. By calculating the work required to keep the cavity moving at constant velocity in opposition to the radiation ...
C. M. Figueroa, S. Saracho
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Comparison of Two DXA Systems, Hologic Horizon W and GE Lunar Prodigy, for Assessing Body Composition in Healthy Korean Adults [PDF]
Endocrinology and Metabolism, 2021 Background Dual-energy X-ray absorptiometry (DXA) is the most widely used method for evaluating muscle masses. The aim of this study was to investigate the agreement between muscle mass values assessed by two different DXA systems.
Seung Shin Park +3 more
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Monitoring Neutron Radiation in Extreme Gamma/X-Ray Radiation Fields
Sensors, 2020 The monitoring of neutron radiation in extreme high ≈1014 (#/cm2-s) neutron/photon fields and at extremely-low (≈10−3 #/cm2-s) levels poses daunting challenges—important in fields spanning nuclear energy, special nuclear material ...
Rusi P. Taleyarkhan
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The impact of radiotherapy on the hypothalamo-pituitary axis: old vs new radiotherapy techniques
Endocrine Connections, 2023 Multimodality cancer therapy has led to remarkable improvements in survival of childhood and young adult cancer, with survival rates exceeding 85%. Such remission rates come with their own adverse sequelea or ‘late effects’.
David S McLaren +4 more
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Electron and photon performance measurements with the ATLAS detector using the 2015–2017 LHC proton-proton collision data [PDF]
Journal of Instrumentation, 2019 This paper describes the reconstruction of electrons and photons with the ATLAS detector, employed for measurements and searches exploiting the complete LHC Run 2 dataset.
Atlas Collaboration
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Superconducting qubit to optical photon transduction
Nature, 2020 Conversion of electrical and optical signals lies at the foundation of the global internet. Such converters are used to extend the reach of long-haul fibre-optic communication systems and within data centres for high-speed optical networking of computers.
M. Mirhosseini +3 more
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A solid-state source of strongly entangled photon pairs with high brightness and indistinguishability [PDF]
Nature Nanotechnology, 2019 The generation of high-quality entangled photon pairs has been a long-sought goal in modern quantum communication and computation. So far, the most widely used entangled photon pairs have been generated from spontaneous parametric down-conversion (SPDC),
Jin Liu +10 more
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