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English: The Hubble Ultra Deep Field, is an image of a small region of space in theconstellation Fornax, composited from Hubble Space Telescope data accumulatedover a period from September 3, 2003 through January 16, 2004.

The patch of sky in which the galaxies reside was chosen because it had a low density of bright stars in the near-field.

The older a sample is, the less (the period of time after which half of a given sample will have decayed) is about 5,730 years, the oldest dates that can be reliably measured by this process date to around 50,000 years ago, although special preparation methods occasionally permit accurate analysis of older samples.

The idea behind radiocarbon dating is straightforward, but years of work were required to develop the technique to the point where accurate dates could be obtained.

The method was developed by Willard Libby in the late 1940s and soon became a standard tool for archaeologists.

Libby received the Nobel Prize in Chemistry for his work in 1960.

A unique characteristic of 14C is that it is constantly formed in the atmosphere.

Production and decay 14C atoms are produced in the upper atmosphere where neutrons from cosmic rays knock a proton from nitrogen-14 atoms.

image radiocarbon dating calibration svg-82image radiocarbon dating calibration svg-37image radiocarbon dating calibration svg-2

In order to detect genuine landscape changes as revealed by changes in surface reflectance from multi-date satellite images, it is necessary to carry out radiometric correction.The radiocarbon dating method is based on the fact that radiocarbon is constantly being created in the atmosphere by the interaction of cosmic rays with atmospheric nitrogen.The resulting radiocarbon combines with atmospheric oxygen to form radioactive carbon dioxide, which is incorporated into plants by photosynthesis; animals then acquire in a sample from a dead plant or animal such as a piece of wood or a fragment of bone provides information that can be used to calculate when the animal or plant died.Español: El Campo Ultra Profundo del Hubble, es una imagen de una pequeña región del espacio en la constelación Fornax, compuesta de datos obtenidos por el telescopio espacial Hubble durante el período entre el 3 de Septiembre de 2003 y el 16 de Enero de 2004.Esta parte del cielo fue escogida por su baja densidadde estrellas brillantes en sus proximidades.




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