It is the seat of the Archbishop of Cologne and of the administration of the Archdiocese of Cologne. It is a renowned monument of German Catholicism and Gothic architecture and was declared a World Heritage Site [4] in The choir has the largest height to width ratio, 3. Construction of Cologne Cathedral began in but was halted in the years around , [9] unfinished.

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Virginia is known for a lot of things: history, natural beauty, and bless our hearts, lots of southern charm. But one of the best features of Virginia is the abundance of small towns and communities throughout the state. A small town can be anything from a couple of hundred people to 10, For the time being, here are a few of the most charming towns in Virginia that have garnered national and statewide praise for their community, beauty, and all-around livability.


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Radiocarbon dating also referred to as carbon dating or carbon dating is a method for determining the age of an object containing organic material by using the properties of radiocarbon , a radioactive isotope of carbon. The method was developed in the late s at the University of Chicago by Willard Libby , who received the Nobel Prize in Chemistry for his work in It is based on the fact that radiocarbon 14 C is constantly being created in the atmosphere by the interaction of cosmic rays with atmospheric nitrogen. The resulting 14 C combines with atmospheric oxygen to form radioactive carbon dioxide , which is incorporated into plants by photosynthesis ; animals then acquire 14 C by eating the plants. When the animal or plant dies, it stops exchanging carbon with its environment, and thereafter the amount of 14 C it contains begins to decrease as the 14 C undergoes radioactive decay.




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