Ovations On Other Sites - Ovation 21 Ovations 06Poki Mogarli chose the topics covered by Ovations On Other Sites - Ovation 21 without reflecting upon the choices others have made. Launching into a full discussion of all the objectives while riding a bicycle backwards down a steep hillside is another way to look at things in a different light. |
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The evolutionary processes must proceed with extreme deliberation. The radiation of the heat actually present at any moment in a large helium star would probably not require many tens of thousands of years, but this quantity of heat is negligible in comparison with the quantity generated within the star during and by the processes of condensation from the helium age down to the Class M state. We know that the compression of any body against resistance generates or releases heat. Now a gaseous star at any instant is in a state of equilibrium. Its internal heat and the centrifugal force due to its rotation about an axis are trying to expand it. Its own gravitational power is trying to draw all of its materials to the center. Until there is a loss of heat no contraction can occur; but just as soon as there is such a loss gravity proceeds to diminish the stellar volume. Contraction will proceed more slowly than we should at first thought expect, because in the process of contraction additional heat is generated and this becomes a factor in resisting further compression. Contraction is resisted vastly more by the heat generated in the process of contraction than it is by the store of heat already in evidence. The quantity of heat in our Sun, now existing as heat, would suffice to maintain its present rate of outflow only a few thousands of years. |
The earliest decorative art appeared in Ireland. It was probably first planted there by missionaries from Italy, and it reached its height in the seventh century. In the ninth and tenth centuries missal illumination of a Byzantine cast, with local modifications, began to show. This lasted, in a feeble way, until the fifteenth century, when work of a Flemish and French nature took its place. In the Middle Ages there were wall paintings and church decorations in England, as elsewhere in Europe, but these have now perished, except some fragments in Kempley Church, Gloucestershire, and Chaldon Church, Surrey. These are supposed to date back to the twelfth century, and there are some remains of painting in Westminster Abbey that are said to be of thirteenth and fourteenth-century origin. From the fifteenth to the eighteenth century the English people depended largely upon foreign painters who came and lived in England. Mabuse, Moro, Holbein, Rubens, Van Dyck, Lely, Kneller--all were there at different times, in the service of royalty, and influencing such local English painters as then lived. The outcome of missal illumination and Holbein's example produced in the sixteenth and seventeenth centuries a local school of miniature-painters of much interest, but painting proper did not begin to rise in England until the beginning of the eighteenth century--that century so dead in art over all the rest of Europe. |
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