Einstein, History and Science

On Saturday I gave a lecture, newly minted, on how Einstein is perceived in the public eye, and on how the numerous misconceptions about Einstein affect the way many non-experts believe that science is actually carried out.  Doing the research for the lecture involved, among other things, going back to some original sources I’d never read or had only read a long time ago, looking a bit at Einstein’s notebook from the period around 1912 (online here), and re-reading large portions of a wonderful biography of Einstein that I’m afraid was written by a physicist for physicists — and consequently largely unreadable without technical background, but a must-read for anyone who has that background.  I refer here to Abram Pais’s famous biography: “Subtle is the Lord…”, whose title refers to Einstein’s famous quip: “Subtle is the Lord, but malicious He is not.”  (You can read about the origin of this quip in Pais’s book.)

I also enjoyed tracking down some videos online of various physical effects that Einstein explained, or that he predicted in advance.  These included videos (linked below) of

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End of the OPERA Story

In case you haven’t yet heard (check my previous post from this morning), neutrinos traveling 730 kilometers from the CERN laboratory to the Gran Sasso laboratory do arrive at the time Einstein’s special relativity predicts they would. Of course (as the press mostly seems to forget) we knew that.  We knew it because ICARUS already made … Read more

Guess What?! Neutrinos Travel Just Below the Speed of Light

Five out of five experiments agree: neutrinos do not travel faster than the speed limit. Or more precisely: to within the uncertainties of current measurements, neutrino speed, for neutrinos with energies far larger than their masses, is experimentally indistinguishable from the speed of light in vacuum.  This is just as expected in standard Einsteinian special … Read more

How Einstein Trumped Newton

Sometimes I encounter people whose impression is that what Einstein’s 1905 theory of special relativity (the one that said no object’s speed can exceed the speed of light in vacuum, etc.) did in “overthrowing” the ideas of the past was somehow like what the Bolsheviks did to the Czars twelve years later– out with the … Read more

Relativity for the Energetic Masses

Ok, folks: yesterday’s first installment of my mass and energy article, discussing energy and momentum, has been extended with a second installment.  Mass has made its appearance now, along with Einstein’s famous relations between energy, momentum, mass and speed, which are described and analyzed using… triangles.  Yes, if you can remember what Pythagoras had to say … Read more

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