50, 100 & 150 years ago from scientific american.

• Localización: Scientific American, ISSN 0036-8733, Vol. 291, Nº. 2, 2004, págs. 14-14
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • This article presents excerpts from articles published in "Scientific American" from 50, 100 & 150 years ago. "In the Commission, dissent came from the scientist member of the jury. Henry D. Smyth asserted that J. Robert Oppenheimer's continued employment would' not endanger the common defense and security,' but on the contrary would' continue to strengthen the United States. 'His opinion presented in sharp focus the disagreement between scientists and the national administration over the present security system. The four members who condemned Oppenheimer based their decision on' fundamental defects in his character,' and on his Communist associations, which they found' have extended far beyond the tolerable limits of prudence and self-restraint' expected of a man in his position." - August 1954, in regards to the Cold War. "Prof. Darwin estimates that if the sun were made of a radio-active material of the same strength as radium, it would be capable of emitting nearly 40 times as much energy as the gravitational energy." -August 1904, in regards to the age of the sun.