An intriguing questions in contemporary American Christianity is whether the warming of relations between Catholics and conservative evangelicals promises a thaw in the ice age that has lasted since the 16th century. In this book, William Shea examines the history of this troubled relationship and the signs of potential reconciliation.
and less as the emanation unden\'ent radioactive decay, and it became motion less after about 30 seconds. Since this process was occurring very rapidly, Hahn and Sackur marked the position of the pointer on a scale with pencil marks. As a timing device they used a metronome that beat out intervals of approximately 1. 3 seconds. This simple method enabled them to determine that the half-life of the emanations of actinium and emanium were the same. Although Giesel's measurements had been more precise than Debierne's, the name of actinium was retained since Debierne had made the discovery first. Hahn now returned to his sample of barium chloride. He soon conjectured that the radium-enriched preparations must harbor another radioactive sub stance. The liquids resulting from fractional crystallization, which were sup posed to contain radium only, produced two kinds of emanation. One was the long-lived emanation of radium, the other had a short life similar to the emanation produced by thorium. Hahn tried to separate this substance by adding some iron to the solutions that should have been free of radium, but to no avail. Later the reason for his failure became apparent. The element that emitted the thorium emanation was constantly replenished by the ele ment believed to be radium. Hahn succeeded in enriching a preparation until it was more than 100,000 times as intensive in its radiation as the same quantity of thorium.
Imagined by a renowned cosmologist who holds an academic post at Galileo's old university, this fictionalised conversation presents the essential biography of a man who transformed our view of the universe.
This generous selection from Galileo's writings contains all the essential texts. Newly translated by Mark Davie and William R. Shea, the contents include full representation from his scientific masterpieces, his contributions to the debate on science and religion, and key documents from his trial before the Inquisition in 1633.
Galileo Galileis Prozess vor der römischen Inquisition ist eines der dramatischsten Ereignisse in der Geschichte der Wissenschaft: hier der standhafte, nur seinem Gewissen und seinen wissenschaftlichen Erkenntnissen verpflichtete Galileo, dort die halsstarrige Kurie, die sich jeder neuen Einsicht aus theologischen Gründen verschließt. William R. Shea und Mariano Artigas vermitteln ein neues Bild von Galileo Galilei (1564-1642) und seinem Prozess vor der römischen Inquisition. Sie schildern auf faszinierende Weise die insgesamt sechs Reisen, die Galileo nach Rom unternommen hat. Sie erklären, warum Galileos Theorie, nach der die Erde sich um die Sonne drehe, in Rom auf so viel theologische Ablehnung stieß – und machen dabei zugleich deutlich, dass trotz der Verschiedenartigkeit der Meinungen die Kirche am Ende durchaus in der Lage gewesen wäre, Galileos Theorien zu akzeptieren, wenn es einen klaren Beweis gegeben hätte – und wenn vor allem Galileo selbst sich konzilianter verhalten hätte.