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Guy Doyen
Works at IBM
Lives in Brno
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Guy Doyen

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Forget what you think you know about dark matter. After a 30-year search for a single, as yet unidentified, species of dark matter particle that would make up some 25% of the mass of the universe, physicists are starting to consider novel explanations. Some envision invisible matter hiding within the... [read more]
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Radius or diameter of the proton

On science websites I can find the same values when speaking about the radius or the diameter of a proton. Can someone explain me why?

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I found the answer: usually, scientists are talking about the proton radius not the proton diameter. And the posts I read (http://www.quantumdiaries.org/2010/07/12/the-size-of-the-proton/ for example), talking about the proton diameter while giving the radius number were just wrong.
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It From Bit

"Wheeler categorised his long and productive life in physics into three periods: "Everything is Particles", "Everything is Fields", and "Everything is Information". (You can read more about his life and work in his autobiography, Geons, Black Holes and Quantum Foam.) The driving idea behind the third period was spurred by his contemplation of the age-old question: "How come existence?" And his answer, first published in a brilliantly written (and very entertaining) paper in 1989, was it from bit"
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"Tout le malheur des hommes vient d'une seule chose, qui est de ne pas savoir demeurer en repos dans une chambre"
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"The only journey is the one within" [Rainer Maria Rilke]
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"A man can be himself only so long as he is alone, and if he does not love solitude, he will not love freedom, for it is only when he is alone that he is really free" [Arthur Schopenhauer]
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How Special is "3 sigma"?
why you should check if the dice are loaded. Written by Andrea Albert. I was searching for evidence of dark matter as my PhD thesis when I was a graduate student at The Ohio State University. While I was still developing my analysis, another team of researchers doing something similar thought ...
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Nullius In Verba
Introduction
I'm an eclectic and open minded french guy, living in Brno (Czech Republic). I love Web culture, social networking, technology (including 3D Printing), science (theoretical physics, cosmology), philosophy, nature and landscape photography, playing the piano, going out on my longboard.
Bragging rights
My curiosity survived formal education
Places
Map of the places this user has livedMap of the places this user has livedMap of the places this user has lived
Currently
Brno
Work
Occupation
Blogger, English to french translator (scientific outreach)
Skills
I am a Swiss Army Knife of the Web
Employment
  • IBM
    IT Specialist, 2015 - present
  • Pixmania
    Webmaster, 2014 - 2014
  • The Next Web
    Editor, TNW France, 2009 - 2012
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Gender
Male
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Friends, Networking