| 单词 | carbon-14 dating |
| 例句 | The archaeologists used a process known as carbon-14 dating to find out how old the bone instruments were. Who invented music? The search for stone flutes, clay whistles and the dawn of song 2022-10-22T04:00:00Z The researchers studied the raw materials and technology and carried out carbon-14 dating, which revealed that the set dates to the early and middle Holocene period, between 9,500 and 6,200 years ago. Oldest hunter-gatherer basketry in southern Europe, 9,500 years old 2023-09-28T04:00:00Z In addition, carbon-14 dating of twelve remains has indicated three periods of funerary use in the cave: in 3800 BC, in 2500 BC. Ritual use of human remains dating from the Neolithic 2023-09-21T04:00:00Z These cross-references have confirmed the validity of carbon-14 dating and permitted us to calibrate the technique as well. College Physics for AP Courses 2015-08-12T00:00:00Z In general, radioactive dating only works for about 10 half-lives; therefore, the limit for carbon-14 dating is about 57,000 years. Chemistry 2019-02-14T00:00:00Z Out of necessity, we neglect here the many details that a scientist takes into consideration when doing carbon-14 dating, and we only look at the basic formula. Algebra and Trigonometry 2015-02-13T00:00:00Z Not only are megafauna bones relatively rare there, but carbon-14 dating could only show that the animals had been gone at least 40,000 years. Bits of an extinct bird’s eggshells may be clue to why megafauna vanished 2022-05-25T04:00:00Z Back in the lab, the researchers estimated the ages of different parts of the slices by counting their rings and using carbon-14 dating. ‘Mystery’ volcano that cooled the ancient world traced to El Salvador 2019-08-16T04:00:00Z However, as with carbon-14 dating, the technique can be verified by a consistent body of knowledge. College Physics for AP Courses 2015-08-12T00:00:00Z The researchers used carbon-14 dating to determine the age of the paintings. 12,000-year-old cave art from the Ice Age found 2018-11-15T05:00:00Z Chase, who previously used lidar at Caracol, where as many as 100,000 people lived, compares this technology to carbon-14 dating. This major discovery upends long-held theories about the Maya civilization 2018-09-27T04:00:00Z In a new study, marine biologists used carbon-14 dating of Greenland shark eye lenses to determine how long they live. Granddaddy of Sharks May Live to 400 2016-08-15T04:00:00Z Preliminary carbon-14 dating indicates that it may have required about 1,100 years for these specimens to work their way up through the ice.” 50 Years Ago: Antarctic Fama 2012-08-18T04:15:07.733Z Its most famous application is carbon-14 dating. College Physics for AP Courses 2015-08-12T00:00:00Z Despite Hawass's efforts, Egypt still has only limited capacity for sophisticated testing, such as carbon-14 dating and DNA analysis. Archaeology meets politics: Spring comes to ancient Egypt 2011-11-23T18:20:36.130Z |
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