Monthly Archives: February 2013

Particle Masses and The Higgs Theory and Weinberg-Salam Theory

Posted on February 16, 2013 by Dennis SILVERMAN

In the beginning theory of electroweak interactions and weak isospin, all of the quarks, leptons, Ws and Bº have to be massless to have the weak isospin symmetry.  But the quarks, leptons and bosons have different masses in the real … Continue reading →

Posted in Higgs Boson | Leave a comment

World Cities With the Highest Number of Murders

Posted on February 15, 2013 by Dennis SILVERMAN

Data on world cities murders is always by murder rates.  If a model of high murder rates in slums and low murders in better off areas and suburbs is a good approximation, then the murder rate is diluted by the … Continue reading →

Posted in Guns | Leave a comment

Data on Murders in US Cities from 2010 to 2012

Posted on February 12, 2013 by Dennis SILVERMAN

I haven’t found a source that lists the murders for major US cities, so I have started collecting some for the most problematic cities.  http://www.city-data.com/ was helpful for city by city data for 2010 and 2011.  Doing this for each … Continue reading →

Posted in Guns | Leave a comment

LA County Gun Homicide Data

Posted on February 12, 2013 by Dennis SILVERMAN

While gun homicides are outnumbered two to one by gun suicides, it is important to look at the tragedies of murders in the inner cities.  In this article I am just reporting on murders in LA County, but plan to add other … Continue reading →

Posted in Guns | Leave a comment

Weak Isospin and the Weakly Interacting Bosons (Force Particles)

Posted on February 11, 2013 by Dennis SILVERMAN

[latexpage] We start with the prime weak interaction of the beta decay of the neutron to a proton plus electron plus anti-neutrino, in which we now understand that a down (d) quark (charge -1/3) in the neutron decays to an up … Continue reading →

Posted in Higgs Boson | Leave a comment

Spin in Quantum Mechanics, with Relativity, and the Dirac Equation

Posted on February 10, 2013 by Dennis SILVERMAN

This is to elaborate the interactions of the Higgs and the Weak Bosons with the quarks and electrons, specified by the concept of a weak isospin analogous to ordinary spin angular momentum.  This article covers the theory of spin angular momentum. Quantum … Continue reading →

Posted in Higgs Boson | Leave a comment

Climate Change Suffering, Adaptation, and Mitigation and Their Funding

Posted on February 8, 2013 by Dennis SILVERMAN

In his talk at the National Academy of Sciences Distinctive Voices series, the National Academy President, Ralph Cicerone, described the three aspects of climate change as Mitigation, Adaptation and Suffering.  I use them here in reverse order, because the Suffering is already … Continue reading →

Posted in Climate Change, Politics | Leave a comment

New Radiative Forcing Evaluations and Climate Sensitivity

Posted on February 7, 2013 by Dennis SILVERMAN

Comments on the use of AR5 results Since climate doubters have been using AR5 draft results to claim that climate sensitivity is smaller, I will be using the same results and new data on the forcing of black carbon.  It … Continue reading →

Posted in Climate Change | Leave a comment

Comments About New Coverage of Climate Sensitivity

Posted on February 6, 2013 by Dennis SILVERMAN

Climate sensitivity is defined as the increase in global temperature for a doubling of pre-industrial CO2.  Pre-industrial CO2 was 280 parts per million (ppm), and CO2 is now at 395 ppm.  So doubling pre-industrial would be at 560 ppm.  We … Continue reading →

Posted in Climate Change | Leave a comment

The Dangers of Gun Ownership

Posted on February 4, 2013 by Dennis SILVERMAN

There have been many excellent articles about gun control in the media with a million times more readers or viewers than I have.  So I have not felt the urge to publicize my views.  Also, there is a lack of … Continue reading →

Posted in Guns | Leave a comment