A comet is a magical sight in the heavens. Comets visible to the naked eye are a uncommon event, and sometimes they put up very suggestive shows in our skies. Those of us who have witnessed the apparition of a bright comet do not forget that experience easily.
The recent landing on comet Churyumov-Gerasimenko of the Rosetta spacecraft has made even more fascinating the observation of comets from the ground, as we got treated by close-ups of the comet surface that resemble mountainous terrains on Earth. Imagining a rock streaming in the sky, coming nearby after a long trip from the Oort cloud, and maybe returning sometimes in the future, or maybe getting lost forever, is truly remarkable.
The terrorist attack of two days ago in Paris to the satirical newspaper Charlie Hebdo left most of us hit hard by the blow to freedom of the press and freedom of thought, which are among that core set of rights on which we have built our society and which we feel we really cannot give up.
I confess I have never unfolded a copy of the Charlie Hebdo newspaper, but I am quite familiar with the work of Wolinski, the 80-year-old cartoonist, who perished in the attack along with his colleagues. I liked his sense of humor and his cartoons a lot, and I am quite pissed off by those two morons taking that away from me.
The following is a guest post by David Orban, CEO at Dotsub, faculty and advisor at Singularity University, and trustee of Network Society Research
When I implanted an NFC chip in my left hand about two months ago at the Singularity University Summit Europe in Amsterdam, I followed the tradition of our species that a hundred thousand years or more ago decided to become a cyborg.
Apologizing for the silence of last week, due not so much to Christmas holidays but to my working around the clock to write a grant proposal, I wish to show you today a graph which describes very well the complexities of modern day frontier theoretical calculations. That graph is the collection of some of the Feynman diagrams that have to be calculated in order to evaluate a property of the electron called its "anomalous magnetic moment".
Ben Allanach, guest blogger, is a Professor of Theoretical Physics at the University of Cambridge. He is grumpy about the way that public funds are being unnecessarily directed to scientific publishing houses. So I am offering this space to him to hear what he has to say about that...
Alas, for once I must say I am not completely happy of one new result by the CDF collaboration - the experiment to which I devoted 18 years of my research time, and where I learned almost everything I know about experimental particle physics.