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Elsayed Elmaghraby
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Ice hotel Sorrisniva alta Norway
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A Graphical Note on Beta Decay and Parity Violation

After writing about parity violating beta decay a few days ago[2], I discussed it with a professor here at A&M and he pointed out that the whole thing isn't that odd at all if you look at the correct part of the following diagram based on Cottingham and Greenwood [1].

At first glance, it seemed odd to me that that magnetic field represented by the thick oragne-ish arrows above didn't reflect in the mirror.  My professor pointed out, however, that the source of the magnetic field, the small circular current, reflected exactly as you'd expect a directed circle to reflect in a mirror.  Consequently, everything is simple and exactly as it should be if you look at the reflection of the cause rather than the effect.

References:
1.  An Introduction to Nuclear Physics
http://dx.doi.org/10.1017%2FCBO9781139164405
Cottingham W.N. & Greenwood D.A. An Introduction to Nuclear Physics, DOI: 10.1017/CBO9781139164405

2.  http://copaseticflow.blogspot.com/2013/05/beta-decay-parity-violation-and-few.html

permalink:  http://copaseticflow.blogspot.com/2013/06/a-graphical-note-on-beta-decay-and.html
#physics    #quantummechanics    #solardecay  
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[‪#‎BBKblogs‬] Buying, Selling and Impact - 'In the Market for Academic Research' - http://ow.ly/OQthI

The fourth day of Law on Trial 2015 saw Professor Fiona Macmillan chair a panel of leading academics on the issue of ‘Scholars, Intellectuals and Research Evaluation Exercises’. The panel considered the research function carried out by universities.
It reflected on the opportunities and criteria for research funding within academic research. It ended its discussion with an engaging debate on the challenges and hopes for the future of academic research.

For more information about Birkbeck’s School of Law - www.bbk.ac.uk/law

For this and other interesting Birkbeck blog posts, please go to the BBK blogs page - www.bbk.ac.uk/blogs
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Rob Jongschaap originally shared to Science:
 
Ultracold Experiment Could Solve One of Physics's Biggest Contradictions — NOVA Next | PBS

'There’s a mysterious threshold that’s predicted to exist beyond the limits of what we can see. It’s called the quantum-classical transition.

If scientists were to find it, they’d be able to solve one of the most baffling questions in physics: why is it that a soccer ball or a ballet dancer both obey the Newtonian laws while the subatomic particles they’re made of behave according to quantum rules? Finding the bridge between the two could usher in a new era in physics.

We don’t yet know how the transition from the quantum world to the classical one occurs, but a new experiment, detailed in Physical Review Letters, might give us the opportunity to learn more.'

http://www.pbs.org/wgbh/nova/next/physics/ultracold-experiment-could-solve-one-of-physicss-biggest-contradictions/

Phys. Rev. Lett. 114, 143004 (2015) - Matter Wave Lensing to Picokelvin Temperatures

'Abstract

Using a matter wave lens and a long time of flight, we cool an ensemble of Rb87 atoms in two dimensions to an effective temperature of less than 50+50−30  pK. A short pulse of red-detuned light generates an optical dipole force that collimates the ensemble. We also report a three-dimensional magnetic lens that substantially reduces the chemical potential of evaporatively cooled ensembles with a high atom number. By observing such low temperatures, we set limits on proposed modifications to quantum mechanics in the macroscopic regime. These cooling techniques yield bright, collimated sources for precision atom interferometry.'

http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.114.143004
By chilling atoms so they come to a standstill, scientists may have figured out a way to observe the transition from quantum to classical realms.
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Researchers prove magnetism can control heat, sound - Phonons—the elemental particles that transmit both heat and sound—have magnetic properties, according to a landmark study supported by Ohio Supercomputer Center (OSC) services and recently published by a researcher group from The Ohio State University. http://ow.ly/2ZcrOU
Phonons—the elemental particles that transmit both heat and sound—have magnetic properties, according to a landmark study supported by Ohio Supercomputer Center (OSC) services and recently published by a researcher group from The Ohio State University.
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You know you're in physics when you see this on a prof's door 😜

#physics #superpositionofstates #quantummechanics #YorkU
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What Goes On Inside a Proton? That is the question, as the LHC gears up for another run. http://www.theguardian.com/science/life-and-physics/2015/feb/21/what-goes-on-inside-a-proton "Quarks and gluons make weird slopes and shapes inside the proton. Understanding them precisely was important for the first results from Cern’s Large Hadron Collider, and continues to be so as we approach the restart over the next few weeks."
Jon Butterworth: Quarks and gluons make weird slopes and shapes inside the proton. Understanding them precisely was important for the first results from Cern’s Large Hadron Collider, and continues to be so as we approach the restart over the next few weeks
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