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Hace 4 días · Hans Bethe, Victor Weisskopf, and Joseph O. Hirschfelder, made the initial calculations, followed by a more detailed analysis by Henderson and Carlson. They drew up specifications for a steel sphere 13 to 15 feet (3.96 to 4.57 m) in diameter, weighing 150 short tons (140 t) and capable of handling a pressure of 50,000 pounds per ...
1 de may. de 2024 · But CERN management, led by its director general, the Austrian-born US physicist Victor Weisskopf, soon recognized that the structured training of personnel was fundamental to securing the laboratory’s future success.
Hace 4 días · Contemporary physicists, when asked to give a physical explanation for spontaneous emission, generally invoke the zero-point energy of the electromagnetic field. This view was popularized by Victor Weisskopf who in 1935 wrote:
Hace 2 días · Victor Weisskopf, who later became the Director General of CERN, summed up Bohr's role, saying that "there were other personalities who started and conceived the idea of CERN. The enthusiasm and ideas of the other people would not have been enough, however, if a man of his stature had not supported it."
15 de may. de 2024 · 1. Introduction. Ultra-luminous X-ray sources (ULXs) are non-nuclear objects found in external galaxies and exhibiting high apparent X-ray lu-minosities exceeding the Eddington limit for stellar-mass black holes (see, e.g., Kaaret et al. 2017; King et al. 2023, for reviews).
13 de may. de 2024 · Supernova remnants (SNRs) provide insights into cosmic-ray acceleration and magnetic field dynamics at shock fronts. Recent X-ray polarimetric measurements by the Imaging X-ray Polarimetry Explorer (IXPE) have revealed radial magnetic fields near particle acceleration sites in young SNRs, including Cassiopeia A, Tycho, and SN 1006.
14 de may. de 2024 · INTRODUCTION. Supernova remnants (SNRs) are thought to play an es-sential role in accelerating Galactic cosmic rays (CRs), with difusive shock acceleration (DSA) generally ac-cepted as the leading mechanism (see e.g. Malkov & Drury 2001).
