PROF. SUBRAHMANYAN CHANDRASEKHAR, assistant professor of theoretical astrophysics at the University of Chicago, described some results of his investigations of the origin and distribution of the chemical elements of the universe in a paper read during the fiftieth anniversary celebrations of the University...
The origin of the atoms is now well understood. It is one of the greatest astrophysical discovery in the twentieth century. All the elements in the Mendeleev table, and specifically the atoms of life: carbon, nitrogen and oxygen, come from the work of all generations of stars in galaxies. ...
【麻省理工公开课|原汁原味】Cosmic Origin of the Chemical Elements(8)。听TED演讲,看国内、国际名校好课,就在网易公开课
13. The first was written with his adviser, George Gamow, a Russian-born physicist with a puckish turn of mind who obtained permission to include as a co-author Hans Bethe, an authority on the origin of cosmic elements. 一被写了与他的顾问,乔治?Gamow,俄国出生物理学家以获得允许包括作为共同...
-energy electrons and atomic nuclei known ascosmicrays reach the Earth from all directions in the Galaxy. Their chemical composition can be observed only to a limited extent, but this can give some information about their place of origin and possibly about the origin of the chemical elements....
Neher and Pickering respectively, and they dealt with the technique of measurement of cosmic rays. In the concluding lecture, Prof. Millikan gave a critical survey of the various existing theories regarding the origin and nature of cosmic rays....
Li, Be, B are secondary in cosmic rays, as are many of the odd-Z elements, as well as the sub-Fe elements. At very low energies, cosmic ray particles are subject to ionization losses, which produce a steep low energy cutoff; all particles below the cutoff are moved into the thermal ...
On the origin of cosmic raysphysicscosmic radiationastrophysicscosmic radiationdistributionearthelementsenergyenergy rangegev rangeA brief survey is given of the various physical, astronomical and radioastronomical data pertaining to cosmic ray nuclei with energies above 1 Gev. A theory is then outlined, ...
Solar Cosmic Rays refer to the cosmic particles of solar origin, predominantly protons, with kinetic energy ranging from 10^7 to 10^10 eV and an average energy of dozens of MeV. These particles are emitted from the solar corona and their intensity fluctuates based on solar activity, following...
Waddington, C.J., Freier, P.S., Fickle, R.K., Brewster, N.R. (1981). Isotopes of Cosmic Ray Elements from Neon to Nickel. In: Setti, G., Spada, G., Wolfendale, A.W. (eds) Origin of Cosmic Rays. International Astronomical Union / Union Astronomique Internationale, vol 94. Sprin...