This category needs an editor. We encourage you to help if you are qualified.
Volunteer, or read more about what this involves.
Related categories

119 found
Order:
1 — 50 / 119
  1. added 2020-04-25
    An Overview of the BFO - Basic Formal Ontology - and Its Applicability for Satellite Systems.Adolfo Americano Brandão & Geilson Loureiro - 2020 - In Franciele Braga Machado Tullio & Lucio Mauro Braga Machado (eds.), Ampliação e Aprofundamento de Conhecimentos nas Áreas das Engenharias,. Ponta Grossa, Brazil: Atena Editora. pp. 30-38.
    This work aims to present an overview of the top-level ontology BFO - Basic Formal Ontology - and its applicability for Satellite Systems. As an upper level ontology, the BFO was designed to be extended, providing the basis for the specification of detailed representational artifacts about scientific information domains. These aspects and the challenges of satellite systems complexity and large size compose a suitable scenario for the creation of a specialized dialect to improve efficiency and accuracy when modeling such systems. (...)
    Remove from this list   Direct download  
     
    Export citation  
     
    Bookmark  
  2. added 2020-04-13
    Hawking Radiation and Analogue Experiments: A Bayesian Analysis.Radin Dardashti, Stephan Hartmann, Karim Thébault & Eric Winsberg - 2019 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 67:1-11.
    We present a Bayesian analysis of the epistemology of analogue experiments with particular reference to Hawking radiation. Provided such experiments can be externally validated via universality arguments, we prove that they are confirmatory in Bayesian terms. We then provide a formal model for the scaling behaviour of the confirmation measure for multiple distinct realisations of the analogue system and isolate a generic saturation feature. Finally, we demonstrate that different potential analogue realisations could provide different levels of confirmation. Our results thus (...)
    Remove from this list   Direct download (8 more)  
     
    Export citation  
     
    Bookmark   4 citations  
  3. added 2020-03-19
    Ontologies for Space and Ground Systems.Barry Smith - 2020 - In Ground System Architectures Workshop. Los Angeles, CA: GSAW. pp. 1-3.
    We will survey a range of ontologies relevant to space and ground system domains. The ontologies form part of the Common Core Ontology ecosystem (CCO) developed under the IARPA KDD initiative. We focus specifically on the Space Domain Ontologies, a suite of ontologies to support space situational awareness, including the Spacecraft Mission Ontology, Spacecraft Ontology, Space Event Ontology and Space Object Ontology.
    Remove from this list   Direct download  
     
    Export citation  
     
    Bookmark  
  4. added 2020-03-06
    The Absolute Frame of Reference.Ninh Khac Son - manuscript
    The manuscript found the formula to calculate the real velocity of the earth and the maximum velocity in the universe, the values of the quantities after calculation as follows: V_earth = 1.852819296∗10^8 m/s.-- C_max = 4.8507438399∗10^8 m/s.-- In order to calculate the above results, the manuscript has built a reference frame transformation suitable for all types of motion(suitable for both linear motion and chaotic motion of the reference frame). This means that we will calculate the velocity of an object without (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  5. added 2020-01-21
    Where is ‘Where is Everybody?’?: Milan M. Ćirković: The Great Silence: The Science and Philosophy of Fermi’s Paradox. Oxford: Oxford University Press, 2018, Xxvii+395pp, $32.95 HB. [REVIEW]Yann Benétreau-Dupin - 2020 - Metascience 29 (1):67-70.
  6. added 2019-11-23
    Singularities and Black Holes.Erik Curiel - 2019 - Stanford Encyclopedia of Philsophy.
  7. added 2019-07-17
    Astroparticle Physics, a Constructive Empiricist Account.Alessio Gava - 2019 - Science and Philosophy 7 (1):21-40.
    Astroparticle physics is an interdisciplinary field embracing astronomy, astrophysics and particle physics. In a recent paper on this topic, Brigitte Falkenburg defended that only scientific realism can make sense of it and that realist beliefs constitute an indispensable methodological principle of research in this discipline. The aim of this work is to show that there exists an anti-realist alternative to this account, along the lines of what Bas van Fraassen showed in his famous book The Scientific Image. Problems and results (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  8. added 2019-06-29
    The Physical Theories and Infinite Hierarchical Nesting of Matter, Volume 2.Sergey G. Fedosin - 2015 - LAP LAMBERT Academic Publishing.
    With the help of syncretiсs as a new philosophical logic, the philosophy of carriers, the theory of similarity and the theory of Infinite Hierarchical Nesting of Matter, the problems of modern physics are analyzed. We consider the classical and relativistic mechanics, the special and general theories of relativity, the theory of electromagnetic and gravitational fields, of weak and strong interactions. The goal is axiomatization of these theories, building models of elementary particles and of their interactions with each other. The main (...)
    Remove from this list   Direct download  
     
    Export citation  
     
    Bookmark  
  9. added 2019-06-06
    Rene Taton and Curtis Wilson , The General History of Astronomy, Volume 2. Planetary Astronomy From the Renaissance to the Rise of Astrophysics. Part B: The Eighteenth and Nineteenth Centuries. Cambridge: Cambridge University Press, 1995. Pp. Xiii+281. ISBN 0-521-35168-5. £45.00, $69.95. [REVIEW]Mari Williams - 1997 - British Journal for the History of Science 30 (1):101-121.
    Remove from this list   Direct download (3 more)  
     
    Export citation  
     
    Bookmark  
  10. added 2019-06-06
    R. Taton and C. Wilson . Planetary Astronomy From the Renaissance to the Rise of Astrophysics. Part A: Tycho Brahe to Newton. The General History of Astronomy, Vol. 2. General Editor, Michael Hoskin. Cambridge: Cambridge University Press, 1989. Pp. X + 274 + Xiv. ISBN 0-521-24254-1. £27.50, $49.50. [REVIEW]M. E. W. Williams - 1991 - British Journal for the History of Science 24 (3):377-379.
    Remove from this list   Direct download (3 more)  
     
    Export citation  
     
    Bookmark  
  11. added 2019-06-06
    The Divided Circle: A History of Instruments for Astronomy, Navigation and Surveying.Ian Hacking - 1989 - Studies in History and Philosophy of Science Part A 20 (2):265-270.
    Remove from this list   Direct download (3 more)  
     
    Export citation  
     
    Bookmark   1 citation  
  12. added 2019-06-06
    GINGERICH, OWEN: "Astrophysics and Twentieth-Century Astronomy to 1950, The General History of Astronomy, Vol. 4A". [REVIEW]Derek J. Raine - 1986 - British Journal for the Philosophy of Science 37:510.
    Remove from this list   Direct download (5 more)  
     
    Export citation  
     
    Bookmark  
  13. added 2019-06-05
    The Legitimate Route to the Scientific Truth.Joseph Krecz - manuscript
    We leave in a beautiful and uniform world, a world where everything probable is possible. Since the epic theory of relativity many scientists have embarked in a pursuit of astonishing theoretical fantasies, abandoning the prudent and logical path to scientific inquiry. The theory is a complex theoretical framework that facilitates the understanding of the universal laws of physics. It is based on the space-time continuum fabric abstract concept, and it is well suited for interpreting cosmic events. However, it is not (...)
    Remove from this list   Direct download  
     
    Export citation  
     
    Bookmark  
  14. added 2019-06-05
    Essay Review: Recent History of Astronomy: The General History of Astronomy.W. H. McCrea - 1985 - History of Science 23 (1):119-122.
    Remove from this list   Direct download (3 more)  
     
    Export citation  
     
    Bookmark  
  15. added 2019-01-19
    De-Eclipsing Common Sense: Why We See Near Rather Than Far in Roy Sorensen’s Eclipse Riddle.Gava Alessio - 2017 - Prolegomena 16 (1):55-72.
    According to Roy Sorensen, when one looks at the Moon, during a solar eclipse, what she sees is its inner part of the farther, reflective one, and not the always-facing-Earth side of our natural satellite. To make his point clearer, he put forward the famous example of a double eclipse involving the fictional planets Far and Near. From the observer’s vantage point, the two planets have the same apparent diameter and overlap. What the agent sees is a dark disk, but (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  16. added 2019-01-12
    Global Catastrophic Risks Connected with Extra-Terrestrial Intelligence.Alexey Turchin - manuscript
    In this article, a classification of the global catastrophic risks connected with the possible existence (or non-existence) of extraterrestrial intelligence is presented. If there are no extra-terrestrial intelligences (ETIs) in our light cone, it either means that the Great Filter is behind us, and thus some kind of periodic sterilizing natural catastrophe, like a gamma-ray burst, should be given a higher probability estimate, or that the Great Filter is ahead of us, and thus a future global catastrophe is high probability. (...)
    Remove from this list   Direct download  
    Translate
     
     
    Export citation  
     
    Bookmark  
  17. added 2019-01-07
    3. Planck Unit Quantum Gravity (Gravitons) for Simulation Hypothesis Modeling.Malcolm J. Macleod - manuscript
    Defined are gravitational formulas in terms of Planck units and units of $\hbar c$. Mass is not assigned as a constant property but is instead treated as a discrete event defined by units of Planck mass with gravity as an interaction between these units, the gravitational orbit as the sum of these mass-mass interactions and the gravitational coupling constant as a measure of the frequency of these interactions and not the magnitude of the gravitational force itself. Each particle that is (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  18. added 2018-12-28
    2. Programming Relativity as the Mathematics of Perspective in a Planck Unit Simulation Hypothesis.Malcolm Macleod - manuscript
    The Simulation Hypothesis proposes that all of reality is in fact an artificial simulation, analogous to a computer simulation. Outlined here is a method for programming relativistic mass, space and time at the Planck level as applicable for use in Planck Universe-as-a-Simulation Hypothesis. For the virtual universe the model uses a 4-axis hyper-sphere that expands in incremental steps (the simulation clock-rate). Virtual particles that oscillate between an electric wave-state and a mass point-state are mapped within this hyper-sphere, the oscillation driven (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  19. added 2018-11-09
    Putting a New Spin on Galaxies: Horace W. Babcock, the Andromeda Nebula, and the Dark Matter Revolution.William L. Vanderburgh - 2014 - Journal for the History of Astronomy 45:141-159.
    When a scientist is the first to perform a difficult type of observation and correctly interprets the result as a significant challenge to then-widely accepted core theories, and the result is later recognized as seminal work in a field of major importance, it is a surprise to find that that work was essentially ignored by the scientific community for thirty years. Such was the fate of the doctoral research on the rotations of the Andromeda Nebula (M31) conducted by Horace Welcome (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark   1 citation  
  20. added 2018-10-24
    Matters of Time Directionality in Classical Physics.Jean-Christophe Lindner - manuscript
    This report offers a modern perspective on the question of time directionality as it arises in a semi-classical context, based on key developments in the field of gravitational physics. Important clarifications are achieved regarding, in particular, the concept of time reversal and that of negative energy state. The conditions imposed by the Leibnizian constraint of relational definition of physical attributes is thoroughly examined and significant consequences of applying this consistency requirement are derived. From this analysis emerges an improved understanding of (...)
    Remove from this list   Direct download  
     
    Export citation  
     
    Bookmark  
  21. added 2018-08-29
    Non-Empirical But Scientific (Response to "Physics on Edge" by George Ellis).Richard Dawid - 2017 - Inference 3 (3).
    Remove from this list   Direct download  
     
    Export citation  
     
    Bookmark  
  22. added 2018-08-20
    The Integral Construct of Science.Joseph Krecz - manuscript
    A number of general theories of physics provide a model for the fundamental rules that govern our universe, becoming a structural framework to which the new discoveries must conform. The theory of relativity is such a general theory. The theory of relativity is a complex theoretical framework that facilitates the understanding of the universal laws of physics. It is based on the curved space-time continuum fabric abstract concept, and it is well suited for interpreting cosmic events. More so, a general (...)
    Remove from this list   Direct download  
     
    Export citation  
     
    Bookmark  
  23. added 2018-03-05
    The Case of the Missing Satellites.Katia Wilson - forthcoming - Synthese:1-21.
    In the late 1990s, computational technology had advanced sufficiently that astrophysicists were able to construct reasonably high resolution computer simulations of the Local Group of galaxies. These simulations indicated there should be around 250 small satellite galaxies orbiting the Milky Way and Andromeda. In the real Local Group, however, only around 40 satellites had been observed, and only twenty or so more have been discovered since then. Despite this discrepancy in numbers, claims have been made in recent years that the (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  24. added 2018-01-16
    Concepts of Mass in Contemporary Physics and Philosophy.Max Jammer - 2009 - Princeton University Press.
    The concept of mass is one of the most fundamental notions in physics, comparable in importance only to those of space and time. But in contrast to the latter, which are the subject of innumerable physical and philosophical studies, the concept of mass has been but rarely investigated. Here Max Jammer, a leading philosopher and historian of physics, provides a concise but comprehensive, coherent, and self-contained study of the concept of mass as it is defined, interpreted, and applied in contemporary (...)
    Remove from this list  
     
    Export citation  
     
    Bookmark   19 citations  
  25. added 2017-12-08
    Annual Modulation Experiments, Galactic Models and WIMPs.Robert G. Hudson - 2006 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 38 (1):97-119.
  26. added 2017-12-05
    Dark Matter, Dark Energy and Modern Cosmology: The Case For a Kuhnian Paradigm Shift.Jorge Horvath - 2009 - Cosmos and History 5 (2):287-303.
    Several works in the last few years devoted to measure fundamental probes of contemporary cosmology have suggested the existence of a delocalized dominant component , in addition to the several-decade-old evidence for “dark matter” other than ordinary baryons, both assuming the description of gravity to be correct. Either we are faced to accept the ignorance of at least 95 % of the content of the universe or consider a deep change of the conceptual framework to understand the data. Thus, the (...)
    Remove from this list  
     
    Export citation  
     
    Bookmark  
  27. added 2017-12-03
    The Firewall Transformation for Black Holes and Some of Its Implications.Gerard ’T. Hooft - 2017 - Foundations of Physics 47 (12):1503-1542.
    A promising strategy for better understanding space and time at the Planck scale, is outlined and further pursued. It is explained in detail, how black hole unitarity demands the existence of transformations that can remove firewalls. This must then be combined with a continuity condition on the horizon, with antipodal identification as an inevitable consequence. The antipodal identification comes with a \ inversion. We claim to have arrived at ‘new physics’, but rather than string theory, our ‘new physics’ concerns new (...)
    Remove from this list   Direct download (3 more)  
     
    Export citation  
     
    Bookmark  
  28. added 2017-12-03
    Black Hole Unitarity and Antipodal Entanglement.Gerard ’T. Hooft - 2016 - Foundations of Physics 46 (9):1185-1198.
    Hawking particles emitted by a black hole are usually found to have thermal spectra, if not exactly, then by a very good approximation. Here, we argue differently. It was discovered that spherical partial waves of in-going and out-going matter can be described by unitary evolution operators independently, which allows for studies of space-time properties that were not possible before. Unitarity dictates space-time, as seen by a distant observer, to be topologically non-trivial. Consequently, Hawking particles are only locally thermal, but globally (...)
    Remove from this list   Direct download (7 more)  
     
    Export citation  
     
    Bookmark   3 citations  
  29. added 2017-11-26
    Classical and Modern Physics.Victor Francis Hess - 1941 - Thought: Fordham University Quarterly 16 (1):199-200.
  30. added 2017-11-25
    The Discovery of Cosmic Radiation.Victor Francis Hess - 1940 - Thought: Fordham University Quarterly 15 (2):225-236.
  31. added 2017-11-24
    Black Holes & Time Warps. [REVIEW]Alexander Harvey - 1996 - Interpretation 23 (1):121-123.
  32. added 2017-10-13
    Pragmatic Unification, Observation and Realism in Astroparticle Physics.Brigitte Falkenburg - 2012 - Journal for General Philosophy of Science / Zeitschrift für Allgemeine Wissenschaftstheorie 43 (2):327-345.
    Astroparticle physics is a recent sub-discipline of physics that emerged from early cosmic ray studies, astrophysics, and particle physics. Its theoretical foundations range from quantum field theory to general relativity, but the underlying “standard models” of cosmology and particle physics are far from being unified. The paper explores the pragmatic strategies employed in astroparticle physics in order to unify a disunified research field, the concept of observation involved in these strategies, and their relations to scientific realism.
    Remove from this list   Direct download (6 more)  
     
    Export citation  
     
    Bookmark   3 citations  
  33. added 2017-10-10
    The Milky Way’s Supermassive Black Hole: How Good a Case Is It?: A Challenge for Astrophysics & Philosophy of Science.Andreas Eckart, Andreas Hüttemann, Claus Kiefer, Silke Britzen, Michal Zajaček, Claus Lämmerzahl, Manfred Stöckler, Monica Valencia-S., Vladimir Karas & Macarena García-Marín - 2017 - Foundations of Physics 47 (5):553-624.
    The compact and, with \ M\, very massive object located at the center of the Milky Way is currently the very best candidate for a supermassive black hole in our immediate vicinity. The strongest evidence for this is provided by measurements of stellar orbits, variable X-ray emission, and strongly variable polarized near-infrared emission from the location of the radio source Sagittarius A* in the middle of the central stellar cluster. Simultaneous near-infrared and X-ray observations of SgrA* have revealed insights into (...)
    Remove from this list   Direct download (4 more)  
     
    Export citation  
     
    Bookmark   1 citation  
  34. added 2017-10-08
    An Alternative to the Schwarzschild Solution of GTR.Andrew Thomas Holster - manuscript
    The Schwarzschild solution (Schwarzschild, 1915/16) to Einstein’s General Theory of Relativity (GTR) is accepted in theoretical physics as the unique solution to GTR for a central-mass system. In this paper I propose an alternative solution to GTR, and argue it is both logically consistent and empirically realistic as a theory of gravity. This solution is here called K-gravity. The introduction explains the basic concept. The central sections go through the technical detail, defining the basic solution for the geometric tensor, the (...)
    Remove from this list   Direct download  
     
    Export citation  
     
    Bookmark  
  35. added 2017-10-06
    The Variation with Time of the Flux and Energy Spectrum of Primary Cosmic Ray Alpha Particles.P. J. Duke - 1960 - Philosophical Magazine 5 (59):1151-1159.
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark   1 citation  
  36. added 2017-10-06
    The Doppler Effect and the Foundations of Physics (I).Herbert Dingle - 1960 - British Journal for the Philosophy of Science 11 (41):11-31.
  37. added 2017-09-30
    Connecting Gravity with Electricity.John G. Cramer - unknown
    Gravity is an extremely weak force . Consider two spheres that are close together, each with one kilogram of mass and one coulomb of electric charge, i.e., one unit each of charge and mass in Standard International Units. There will be electrical repulsion pushing them apart and gravitational attraction pulling them together, but which is bigger? It’s no contest: the electric force between these spheres is 1.35 x 1020times stronger than the gravitational force. But perhaps this difference is so large (...)
    Remove from this list   Direct download  
    Translate
     
     
    Export citation  
     
    Bookmark  
  38. added 2017-09-30
    Opus 150: Dark Forces in the Universe.John G. Cramer - unknown
    This column is a milestone. In 1983, while I was on a one year sabbatical at the Hahn Meitner Institute for Nuclear Physics in what was then West Berlin, I received a letter from Stan Schmidt informing me that Jerry Pournelle had decided that he no longer wished to be an Alternate View columnist for Analog and asking if I was interested in taking over as the AV columnist and “alternating” with G. Harry Stine.
    Remove from this list   Direct download  
    Translate
     
     
    Export citation  
     
    Bookmark  
  39. added 2017-09-30
    Observations on Extensive Air Showers II: Time Variations in the Energy Region of 1017eV.T. E. Cranshaw & W. Galbraith - 1957 - Philosophical Magazine 2 (18):804-810.
  40. added 2017-09-29
    BOOMERanG and the Sound of the Big Bang.John G. Cramer - unknown
    Two years ago, astrophysicists studying Type Ia supernovas discovered that our universe is a much stranger place than we had imagined, with invisible vacuum energy accelerating its expansion. (See my column about this in the May-1999 Analog.) However, new astrophysical observations from the BOOMERanG experiment (Balloon Observations Of Millimetric Extragalactic Radiation and Geomagnetics), a balloon-borne cryogenic microwave telescope measurement that flew at an altitude of about 24 miles over the Antarctic, indicate that our universe is also rather ordinary, in that (...)
    Remove from this list   Direct download  
    Translate
     
     
    Export citation  
     
    Bookmark  
  41. added 2017-09-29
    Stretch Marks of the Universe.John G. Cramer - unknown
    This column is about the apparent quantization of cosmological red-shifts, the persistent astronomical observation that the red-shifts and velocities of distant galaxies are not randomly distributed but rather grouped in clumps of similar values. About eight years ago I had considered an AV column on this mysterious phenomenon, but after looking at the data then available I decided against it. As an experimental physicist I've seen too many "structures" in poor-statistics data that vanished as the statistics improved. Over the years, (...)
    Remove from this list   Direct download  
    Translate
     
     
    Export citation  
     
    Bookmark  
  42. added 2017-09-29
    Dark-Energy Stars Vs. Black Holes.John Cramer - manuscript
    For three days in April, 2005, I was a speaker and panelist at the NASA-sponsored “Physics for the rd Millennium II Conference” in Huntsville, Alabama, where twelve of us, including two Nobel Laureates, were invited to give 50-minute lectures about cutting-edge physics to an audience of NASA engineers, teachers, students, parents, and other interested attendees. In this column, I want to tell you about the work described in one of the talks, given by Dr. George Chapline of the Lawrence Livermore (...)
    Remove from this list  
     
    Export citation  
     
    Bookmark  
  43. added 2017-09-29
    "Texas" in Munich, Part 2: Gamma Ray Bursts.John Cramer - unknown
    Alternate View Column AV-74 Keywords: gamma ray bursts NASA BATSE fireball neutron star merger galactic cosmological cosmology Published in the October-1995 issue of Analog Science Fiction & Fact Magazine ; This column was written and submitted 3/1/95 and is copyrighted (©1995 by John G. Cramer. All rights reserved. No part may be reproduced in any form without the explicit permission of the author.
    Remove from this list   Direct download  
     
    Export citation  
     
    Bookmark  
  44. added 2017-09-29
    Neutrino Results From SNO, KamLAND, and WMAP.John Cramer - manuscript
    The neutrino is one of nature's most peculiar particles. It has 1/2 unit of spin but no electric charge, a near-zero rest-mass, and it interacts with other particles only through gravity and the weak interaction. It can pass through light years of lead without an interaction. There is good experimental evidence that the Earth receives only about 1/3 of the neutrinos that the Sun should be producing and sending in our direction.
    Remove from this list   Direct download  
     
    Export citation  
     
    Bookmark  
  45. added 2017-09-29
    Ultra-Energetic Cosmic Rays and Gamma Ray Bursts.John Cramer - unknown
    Cosmic rays have been a standard if mysterious phenomenon in astrophysics since the 1930s when experimental physicists first began to detect charged particles with Wilson cloud chambers and with Geiger counters and other electronic detectors. They found that energetic particles were detected even when no radioactive sources were nearby and inferred from the angles of the tracks in the cloud chambers that these particles were coming from the sky.
    Remove from this list   Direct download  
     
    Export citation  
     
    Bookmark  
  46. added 2017-09-29
    Extrasolar Planets and Occult Astronomy.John Cramer - unknown
    Keywords: extrasolar planets Hubble telescope occulter apodization life oxygen Published in the March-2007 issue of Analog Science Fiction & Fact Magazine ; This column was written and submitted 10/17/2006 and is copyrighted ©2006 by John G. Cramer. All rights reserved. No part may be reproduced in any form without the explicit permission of the author.
    Remove from this list   Direct download  
     
    Export citation  
     
    Bookmark  
  47. added 2017-09-29
    The Music of the (Neutron) Spheres.John Cramer - unknown
    This column is about the heaviest neutron star ever observed, an object that produces the largest gravitational fields ever directly measured. This discovery by X-ray astronomers was reported at the Spring Meeting of the American Physical Society, held April-1998 in Columbus, Ohio. As will be discussed below, the very large mass of the neutron star has important implications for our understanding of the strong nuclear force at very large densities.
    Remove from this list   Direct download  
     
    Export citation  
     
    Bookmark  
  48. added 2017-09-29
    Using DNA to Search for Dark Matter.John Cramer - unknown
    Alternate View Column AV-91 Keywords: dark matter WIMPs weakly interacting massive particles detection DNA eV energy deposition Published in the September-1998 issue of Analog Science Fiction & Fact Magazine ; This column was written and submitted 02/20/98 and is copyrighted ©1998 by John G. Cramer. All rights reserved. No part may be reproduced in any form without the explicit permission of the author.
    Remove from this list   Direct download  
     
    Export citation  
     
    Bookmark  
  49. added 2017-09-29
    GRS1915+105: The Fastest Fireball in the Galaxy.John Cramer - unknown
    Our galaxy contains a remarkable "faster-than-light" object discovered only a few months ago by radio astronomers. The object, a blob of hot radio-emitting matter thrown off from gamma ray source GRS1915+105, was observed to separate from its larger parent object at an apparent speed of 1.25 times the velocity of light. The operant word here is "apparent". The faster-than-light separation speed (separation distance divided by time) is believed to be a consequence of the same relativistic illusion previously observed for radio (...)
    Remove from this list   Direct download  
     
    Export citation  
     
    Bookmark  
  50. added 2017-09-29
    Supernova in a Bose-Einstein Bottle.John Cramer - unknown
    Alternate View Column AV-108 Keywords:Bose Einstein condensate force reversal collapse bounce supernova neutron star remnant Published in the October-2001 issue of Analog Science Fiction & Fact Magazine ; This column was written and submitted 4/6/2001 and is copyrighted ©2001 by John G. Cramer. All rights reserved. No part may be reproduced in any form without the explicit permission of the author.
    Remove from this list   Direct download  
     
    Export citation  
     
    Bookmark  
1 — 50 / 119