![]() Einstein in his 1905 paper is essentially what it is, and how it's been done since humans appeared. The operational definition of assigning a time to an event as mentioned by A. but I, like R.P.Feynman, am 'curious.' eg: Ignorance, can be cured. The information is publicly available, and all it takes is a will 'to check steps and primary sources' to find out who's 're-interpreting' what. The purpose of the paper is to grow with the audience, and put to shame only those who judge rashly without fully studying a subject. There is nothing stopping you, for example, contacting the youtube author of the tutorial video I linked and asking them to review the part of my paper that uses their tutorial. I will provide links and step by step derivations. If you don't understand something, ask for clarification, and I will not just answer. The paper I wrote has links to beginner's physics tutorials. They do not use the mass that Einstein showed in the 1905 paper is consistent to both reference frames. physicists tend to use 'rest' mass, or 'transverse mass' when explaining Einsteins theory in terms of F=dP/dt. Notice, the mass that both observers would agree to in Einstein's 1905 paper. eg: my name, skepticalHistorian, is because I like to see sources to show why comments about history are made. I'm fairly certain that there's a fabulous re-writing of history going on. ( I can read German, so I could even go back and make sure the translation's accurate.) But. rather, interpretations of invariant mass being distinct from total mass are a change from Einstiein's original philosophy as translated into English. Hence, relativistic mass is not obsolete. In finance terms it's 'diminishing returns from your investment'.Įinstein specifically said that mass is a measure of energy content. Total energy is a now the sum of 'rest energy' (rest mass) and 'kinetic energy'. ![]() The term 'relativistic mass' is obsolete, being replaced with kinetic energy. The original misinterpretation was, the extended time was due to inertial resistance. Whether the B path is discontinuous at reversal (Bt=4) or a curved transition is irrelevant.ī will receive 10 A-ticks during 8 B-ticks.Ī will receive 8 B-ticks during 10 A-ticks (not shown for clarity) ![]() The 'reference' clock is A with 10 ticks for the interval. The simplest graphical explanation for the 'twin' problem is this graphic. Each observers length contraction of the other frame.Īny method of mutual observation of clock rates is not needed, since aging depends on accumulated time, which requires a comparison at the completion of a closed course. It also provides the reciprocity required by SR. Her perception of events is the basis for concluding the spatial distance has decreased. The moving observer B is not aware of any time dilation, and assuming a pseudo rest frame, thinks the destination arrives early. The biological clock (an em process) of a moving observer is affected to the same extent as a mechanical clock. If all objects are in motion, then all clocks lose time, and only the differences can be measured. Thus each can be moving and be at 'rest' simultaneously. Relative rest can be defined as: 'the state of two systems of objects that have the same velocity'. The light clock is the simplest process that demonstrates this effect. Time dilation results from motion and the independent speed of light.Īny physical process that depends on em interactions is affected. Objects, can we tell which object's time runs slow? 1) We have shown that it is the length contraction that makes time run slow for the traveling twin,Ģ) We have shown that the shortening of time occurs in the frame of an object because something happens to it, not because it passes through 2 or more different frames.ģ) Since a third event makes time run slow, if no event occurs to any of the 2 relatively moving
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