Results 1 to 10 of about 172,451 (245)
To Scatter a Photon by a Photon [PDF]
American Journal of Physics, 1966 This paper gives a more detailed description of the “x-ray-flashbulb” experiment for observing the scattering of light by light in vacuum. It is shown here that at least ten to twenty scattering events can be initiated by two x-ray flashbulbs, properly oriented and synchronized to flash together in an appropriate experimental arrangement.
Gerald Rosen
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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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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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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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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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Material Light—In the Realm of the Photon
Arts, 2020 The artist discusses his work and concepts within the context of the true hologram. He examines the character and attributes of the holographic medium that can assist in the evolution of human perception.
August Muth
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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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Pedagogy and Psychology of Sport, 2020 Climatic tale. In this article, the author made an attempt to analyze the causes and consequences of climate warming on Earth. How real are the threats and what is the deadline for the response of mankind to them.
Аnatoliy Zhukov
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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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Reviews of Modern Physics, 2014 Topological photonics is a rapidly emerging field of research in which geometrical and topological ideas are exploited to design and control the behavior of light. Drawing inspiration from the discovery of the quantum Hall effects and topological insulators in condensed matter, recent advances have shown how to engineer analogous effects also for ...
Ozawa T +10 more
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