Monadic DynamicsWe develop a monadic framework formalising an operational notion of dynamics, seen as the setting and evolution of initial value problems, in general physical theories. We identify in the…Stefano Gogioso·Jan 19, 2015SaveLearn
Gravitation and the earth sciences: the contributions of Robert DickeThe American physicist Robert Dicke (1916-1997) is primarily known for his important contributions to gravitation, cosmology, and microwave physics. Much less known is his work in geophysics and…Helge Kragh·Jan 18, 2015SaveLearn
Contextual completeness and a classification scheme for theoriesWe discuss the role of propositions, truth, context and observers in scientific theories. We introduce the concept of generalized proposition and use it to define an algorithm for the classification…George Jaroszkiewicz·Jan 13, 2015SaveLearn
M-history without the MA review of the book "A Brief History of String Theory: From Dual Models to M-Theory" by Dean RicklesM. J. Duff·Jan 11, 2015SaveLearn
Was Lepenski Vir an ancient Sun or Pleiades observatory?In this work we consider some old hypotheses according to which remarkable mesolithic village Lepenski Vir (9500 -- 5500 BC) at the right (nearly west) Danube riverside in the Iron gate in Serbia was…Vladan Pankovic, Milan Mrdjen, Miodrag Krmar·Jan 6, 2015SaveLearn
The universe would not be perfect without randomness: a quantum physicist's reading of AquinasRandomness is an unavoidable notion in discussing quantum physics, and this may trigger the curiosity to know more of its cultural history. This text is an invitation to explore the position on the…Valerio Scarani·Jan 5, 2015SaveLearn
The search for longitude: Preliminary insights from a 17th Century Dutch perspectiveIn the 17th Century, the Dutch Republic played an important role in the scientific revolution. Much of the correspondence among contemporary scientists and their associates is now digitally available…Richard de Grijs·Jan 4, 2015SaveLearn
The Paradigm of Projectile Motion and its Consequences for Special Relativity. Making Sense of PhysicsA new explanation for space contraction and time dilation in special relativity is offered based on kinetic energy differences between observers rather than velocity differences. The classical…Paul A. Klevgard·Jan 3, 2015SaveLearn
Maxwell-Huygens, Newton-Cartan, and Saunders-Knox SpacetimesI address a question recently raised by Simon Saunders [Phil. Sci. 80(2): 22-48 (2013)] concerning the relationship between the spacetime structure of Newton-Cartan theory and that of what I will…James Owen Weatherall·Dec 31, 2014SaveLearn
Understand assumptions and know uncertainties: Boscovich and the motion of the EarthThe general prohibition of books advocating heliocentric theory put many progressive Jesuits in a difficult position. One of the most prominent Jesuit scientists of the 18th century, Rogerius…Davor Krajnovic·Dec 30, 2014SaveLearn
Tower bells and time zones, a history of synchronizationThe Astrarium made by Jacopo Dondi dell'Orologio in Padua in 1344 is one of the first public horologia in the World, their public utility is also shown through the history of the tower bell of…Costantino Sigismondi·Dec 30, 2014SaveLearn
The first winter solstice observed at the meridian line of Santa Maria degli Angeli in RomeThe page written by the astronomer Francesco Bianchini (1662-1729) and containing the data of the 1701 winter solstice observed at Santa Maria degli Angeli is presented for the first time in figure 2…Costantino Sigismondi·Dec 30, 2014SaveLearn
The Bayesian Who Knew Too MuchIn several papers, John Norton has argued that Bayesianism cannot handle ignorance adequately due to its inability to distinguish between neutral and disconfirming evidence. He argued that this…Yann Benétreau-Dupin·Dec 29, 2014SaveLearn
Book Review of 'Evolutionary and Interpretive Archaeologies' Edited by Ethan E. Cochrane and Andrew GardnerEvolutionary and Interpretive Archaeologies, edited by Ethan E. Cochrane and Andrew Gardner, grew out of a seminar at the Institute for Archaeology at University College London in 2007. It consists…Liane Gabora, Carl P. Lipo·Dec 28, 2014SaveLearn
Half a Century with QuarksA brief account of interesting moments in the genesis of the quark paradigm is presented.Vladimir A. Petrov·Dec 28, 2014SaveLearn
Applying Popper's ProbabilityProfessor Sir Karl Popper (1902-1994) was one of the most influential philosophers of science of the twentieth century, best known for his doctrine of falsifiability. His axiomatic formulation of…Alan B. Whiting·Dec 24, 2014SaveLearn
Cosmological Ontology and EpistemologyIn cosmology, we would like to explain our observations and predict future observations from theories of the entire universe. Such cosmological theories make ontological assumptions of what entities…Don N. Page·Dec 23, 2014SaveLearn
Einstein and Besso: from Zürich to MilanoThe 1896-1901 Milanese period is a key one to understand Einstein's training background. When he was a student at the ETH in Zürich (the Swiss Federal Polytechnic in Zürich) from 1896 to 1900, he…Christian Bracco·Dec 22, 2014SaveLearn
Ettore Majorana: his work and his lifeIn this paper we present a panoramic view of the main scientific articles published by Ettore Majorana, the brightest Italian theoretical physicist of the XX century (actually, Enrico Fermi regarded…Erasmo Recami·Dec 20, 2014SaveLearn
Measures of the Earth Obliquity during the 1701 Winter Solstice at the Clementine Meridian Line in RomeThe great meridian line in the Basilica of Santa Maria degli Angeli in Rome was built in 1701/1702 with the scope of measuring the obliquity of the Earth's orbit in the following eight centuries,…Alexandre Humberto Andrei, Costantino Sigismondi, Veronica Regoli·Dec 18, 2014SaveLearn
The Sequence of Events that led to the 1963 Publications in "Nature" of 3C273, the first Quasar and the first Extragalactic Radio JetWe are undertaking a detailed investigation, based on the available evidence, of the sequence of events that led to the historical discovery of the first Quasar 3C273.Cyril Hazard, David Jauncey, W. M. Goss et al.·Dec 17, 2014SaveLearn
Disregarding the 'Hole Argument'Jim Weatherall has suggested that Einstein's hole argument, as presented by Earman and Norton (1987), is based on a misleading use of mathematics. I argue on the contrary that Weatherall demands…Bryan W. Roberts·Dec 17, 2014SaveLearn
Towards an Informational Pragmatic RealismI discuss the design of the method of entropic inference as a general framework for reasoning under conditions of uncertainty. The main contribution of this discussion is to emphasize the pragmatic…Ariel Caticha·Dec 17, 2014SaveLearn
Stories from the Sky: Astronomy in Indigenous KnowledgeIndigenous Australian practices, developed and honed over thousands of years, weave science with storytelling. In this Indigenous science series, we'll look at different aspects of First…Duane W. Hamacher·Dec 16, 2014SaveLearn
The Standard Model of Particle PhysicsThis is a historical account from my personal perspective of the development over the last few decades of the standard model of particle physics. The model is based on gauge theories, of which the…Tom W. B. Kibble·Dec 12, 2014SaveLearn