Magnetic spins that last for ever

Notes 14 : Spins in Magnetic Fields

A nice illustration of rotation operator methods that is also important physically is the problem of spins in magnetic fields. The earliest experiments with spins in magnetic fields were those of Stern and Gerlach, which first revealed the quantization of electron spin. Similar but later experiments by Stern and other collaborators were used to make crude measurements of the proton magnetic mom...

Ever at the ready for events that never happen

Stress, whether daily stress, work stress or traumatic stress, is unhealthy. This lecture covers three recent theoretical approaches in explaining the mechanisms underlying the influence of psychological stress on somatic health. It is argued that stress research should focus less on stressors themselves and put more emphasis on prolonged stress responses. Three mechanisms are identified that c...

Memories that last in hypertension.

In recent years, it has become clear that the immune system contributes to the genesis of hypertension. Hypertensive stimuli, such as angiotensin II, DOCA-salt, and norepinephrine, cause T cells and monocytes/macrophages to accumulate in the kidney and vasculature. These cells release inflammatory cytokines, such as IL-6, interferon-γ, and IL-17, that promote renal and vascular dysfunction. The...

Making Memories That Last X

Programs for Ever Programs for Ever

This article reflects our experience with the preservation of computer programs that once served a scientific purpose, but were not maintained since then. After producing results, published in scientific journals in the 70’s, 80’s and begin 90’s, they were stored provisionally on some kind of persistent medium and are at present restored to current state of the art hardware. We constructed an a...