LOG#079. Zeta multiple integral.

My second post this day is a beautiful relationship between the Riemann zeta function, the unit hypercube and certain multiple integral involving a “logarithmic and weighted geometric mean”. I discovered it in my rival blog, here: http://tardigrados.wordpress.com/2013/01/08/la-funcion-zeta-de-riemann-definida-en-terminos-de-integrales-multiples/ First of all, … Continue reading

LOG#078. Averages.

I am going to speak a little bit about Statistics. The topic today are “averages”. Suppose you have a set of “measurements” where . Then you can define the following quantities: Arithemtic mean.     Geometric mean.     Harmonic … Continue reading

LOG#077. Entropic electrogravity.

Tower Wang, in his paper Coulomb Force as an Entropic Force, deduced Coulomb and Newton laws using the Verlinde approach in D=3+1 dimensions. He begins with the Reissner-Nordstrom metric in spacetime:     with the function     and   … Continue reading

LOG#076. Pedro, in memoriam.

Today, I am going to remember a cool Spanish physicist that is not longer with us since the past summer ( he passed away relatively young, suddenly when he was only 65). His name was Pedro F. González-Díaz. And no, … Continue reading

LOG#075. Batmobile “paradox”.

The Batmobile “fake paradox” helps us to understand Special Relativity a little bit. This problem consists in the next experiment: There are two observers. Alfred, the external observer, and Batman moving with his Batmobile. Now, we will suppose that the … Continue reading

LOG#074. Dual units.

The last of my three posts tonight is a mysterious dual system of units developed my rival blog (in Spanish language mainly): http://tardigrados.wordpress.com/ His author launched an interesting but speculative dual system of units in which every physical quantity seems … Continue reading

LOG#073. The G2 system.

The second paper I am going to discuss today is this one: http://inspirehep.net/record/844954?ln=en In Note on the natural system of units, Sudarshan, Boya and Rivera introduce a new kind of “fundamental system of units”, that we could call G2 system  … Continue reading

LOG#072. The hG system.

Brazil is experimenting an increase of scientific production. Today, I am going to explain this brazilian paper http://arxiv.org/abs/0711.4276v2 concerning the number of fundamental constants. The Okun cube of fundamental constant, firstly introduced by Gamov, Ivanenko and Landau, has raised some … Continue reading