renarasheed8265 A traditional example is that of supernova SN 1987A, which emits an “afterglow” of gamma-ray photons from the decay of newly made radioactive nickel-56 and cobalt-56. Most gamma rays in astronomy, nevertheless, arise by different mechanisms. It’s now understood that a nuclear isomeric transition, however, can produce inhibited gamma decay with a measurable and much … Read more
In 2002, whereas still a psychiatry resident, Gratzer joined the Manhattan Institute as a senior fellow. In 2004, Gratzer was first author of a peer-reviewed transient report “Lifetime rates of alcoholism in adults with anxiety, depression, or co-morbid depression/anxiety: a group survey of Ontario” revealed within the Journal of Affective Disorders. On June 28, 2005, … Read more
The perihelion of Mercury’s orbit exhibited an excess fee of precession over that which may very well be defined by the tugs of the other planets. The ability to detect and precisely measure the minute value of this anomalous precession (only 43 arc seconds per tropical century) is testimony to the sophistication of nineteenth century … Read more