with
Also serves as reading companion for Albert Einstein's
Relativity: The Special and the General Theory
By Jakob Møller Christensen
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September 23rd 2017:Improved the first part of ‘Propagation of Radiation,’ including a more accurate translation of the excerpt from Albert Einstein's address at Leiden University in 1920. Removed the section ‘Conjecture: The Universe Tree’ along with all other mentions of black holes. The former version of May 17th 2017 is available for comparison.  
May 17th 2017:Improved formulations in ‘Gravitationacceleration equivalence’ and, in ‘Atomic Clocks vs. Time’, left out heat consideration in footnote describing dynamics of atomic clocks, considering it irrelevant, and improved formulation of the challenge of translating time measurements between contexts in the same section. Left out the section ‘Particle Acceleration.’ The former version of September 26th 2015 is available for comparison.  
September 26th 2015:Modified treatment, exchanging the introduced ‘gravitation space’ with aether, thus reviving the latter from its illegitimate abandonment, the necessity of which Einstein himself admitted to:  
November 4th 2013:Added to ‘Examination of fourdimensional spacetime’ a consideration detailing the conceptual distinction between space and time. Included suggestions of various alternate types of clocks (hourglass, pendulumclock, sundial) in ‘Atomic Clocks vs. Time,’ which clocks are affected differently by changes in gravitational density, leading to different conclusions about whether time goes at a faster (atomic clocks), slower (hourglass and pendulumclock) or the same rate (sundial) in less medium density. The former version of October 11th is available for comparison.  
October 11th 2013:Made some formulation adjustments in ‘On Refutations’ and ‘The Symmetrical Twin Paradox variation,’ as it came to attention that the previous formulations could easily offend physicist readers. Such jabs and quips, never mind how they were intended, can only deteriorate communication. I apologize.  
September 26th 2013:The speculation in ‘Considerations of the Universe,’ that a black hole collapse may continue through the zerodimension into the birth of a new universe, has been expanded somewhat into the section ‘Conjecture: The Universe Tree,’ due to the possibility that there may be a flux of medium between source universe and subuniverse, in which case an event horizon of a black hole would be defined as the sphere inside which medium flux exceeds radiation speed relative to the zerodimension of the black hole. If this conjectured possibility is true, it would mean that gravity of black holes is essentially different from the gravitation of smaller (noncollapsed) masses, and it would invalidate the claim of the revision of September 7th that black holes have no event horizon. The former version of September 7th is available for comparison.  
September 7th 2013:Major revision, due to the treatment's flaw of considering radiation to be attracted by gravitation, rather than consistently retain the interpretation employed when explaining stellar aberration (got stuck with an aspect of Einstein's gravitation theory). Changes have been made in the treatment of the twentieth, twentysecond and twentyninth sections of the popular exposition, and in the subsection dealing with Feynman's treatment of gravitationacceleration equivalence. This requires abandonment of the gravitationacceleration equivalence, and also does away with the hypothesized event horizon of black holes. Radiation is merely slowed through increased medium density, passing through the same amount in each time interval, which, together with quantum electrodynamics, explains stellar aberration and starlight curving around the Sun etc. The former version of September 3rd is available for comparison.  
September 3rd 2013:Included Einstein's own formulation, from his address at Leiden University in 1920, of the necessity of a propagation medium, in the footnote to the quote heading the section ‘Propagation of Radiation.’ Also made a few formulation improvements here and there. The former version of August 29th is available for comparison.  
August 29th 2013:Made a few nonessential edits to the introductory chapter. The former version of August 26th is available for comparison.  
August 26th 2013:Added introductory chapter ‘On Refutations.’ The former version of August 24th is available for comparison.  
August 24th 2013:Modified a footnote to more accurately describe the hypothesized effect upon radiation propagation velocity (aether wind) relative to Earth's surface, which would result if Earth were moving through a stationary aether (stationary with respect to the Sun, somewhat arbitrarily). The former version of August 23rd is available for comparison.  
August 23rd 2013:Added the paradox of ultimate symmetry and simplicity, namely that of twins traveling away from each other, starting in empty space, so there is no way around Special Relativity predicting that they will be younger than each other when they rendezvous! The former version of August 18th is available for comparison.  
August 18th 2013:Improved table of contents and various section titles, added additional explicitation in pinpointing Einstein's original misstep in the trainandembankment thought experiment in ‘Examination of the abandonment of absolute time,’ as well as an extra consideration in the Triplet Paradox. The former version of August 15th is available for comparison.  
August 15th 2013:Added the ‘triplet paradox’ as symmetrical variant of the twin paradox (two travel symmetrically in opposite directions while the third stays home). Reincluded the section ‘Quotes and Interpretations.’ Edited confession of false judgment under ‘On Pride.’ The former version of July 27th is available for comparison.  
July 27th 2013:Made a few nonessential edits, such as using the proper term anisotropy rather than ‘nonisotropy’ to denote the effect that can be experienced with movement relative to the propagation medium. The former version of July 9th is available for comparison.  
July 9th 2013:Improved logical clarity of the key refutation in ‘Abandoning absolute time.’ The former version of July 2nd is available for comparison.  
July 2nd 2013:Modified the section on Feynman's scenario for illustrating relativity of simultaneity to include explicit acknowledgement that his scenario—as opposed to Einstein's—consistently honors both radiation isotropy and the principle of relativity (but it deals only with consequent appearances). Additionally, some minor formulation modifications has been made here and there in the treatment. The former version of June 5th is available for comparison.  
See also: (examples of previous scepticism toward relativity theory)
