Jove
Visualize
Contáctanos
JoVE
x logofacebook logolinkedin logoyoutube logo
ACERCA DE JoVE
Visión GeneralLiderazgoBlogCentro de Ayuda JoVE
AUTORES
Proceso de PublicaciónConsejo EditorialAlcance y PolíticasRevisión por ParesPreguntas FrecuentesEnviar
BIBLIOTECARIOS
TestimoniosSuscripcionesAccesoRecursosConsejo Asesor de BibliotecasPreguntas Frecuentes
INVESTIGACIÓN
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchivo
EDUCACIÓN
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualCentro de Recursos para ProfesoresSitio de Profesores
Términos y Condiciones de Uso
Política de Privacidad
Políticas

Videos de Conceptos Relacionados

The Fossil Record02:56

The Fossil Record

The fossil record documents only a small fraction of all organisms that have ever inhabited Earth. Fossilization is a rare process, and most organisms never become fossils. Moreover, the fossil record only exhibits fossils that have been discovered. Nevertheless, sedimentary rock fossils of long-lived, abundant, hard-bodied organisms dominate the fossil record. These fossils offer valuable information, such as an organism's physical form, behavior, and age. Studying the fossil record helps...
Nuclear Stability03:18

Nuclear Stability

Protons and neutrons, collectively called nucleons, are packed together tightly in a nucleus. With a radius of about 10−15 meters, a nucleus is quite small compared to the radius of the entire atom, which is about 10−10 meters. Nuclei are extremely dense compared to bulk matter, averaging 1.8 × 1014 grams per cubic centimeter. If the earth’s density were equal to the average nuclear density, the earth’s radius would be only about 200 meters.
To hold positively charged protons together in the...
Radioactive Decay and Radiometric Dating02:48

Radioactive Decay and Radiometric Dating

Radioactivity is a spontaneous disintegration of an unstable nuclide and is a random process, as all the nuclei in the sample do not decay simultaneously. The number of disintegrations per unit time is called the activity (A), which is directly proportional to the number of nuclei in the sample. The decay constant (λ) is an average probability of decay per nucleus in unit time.
Nuclear Fission02:50

Nuclear Fission

Many heavier elements with smaller binding energies per nucleon can decompose into more stable elements that have intermediate mass numbers and larger binding energies per nucleon—that is, mass numbers and binding energies per nucleon that are closer to the “peak” of the binding energy graph near 56. Sometimes neutrons are also produced. This decomposition of a large nucleus into smaller pieces is called fission. The breaking is rather random with the formation of a large number of different...
Nuclear Transmutation03:20

Nuclear Transmutation

Nuclear transmutation is the conversion of one nuclide into another. It can occur by the radioactive decay of a nucleus, or the reaction of a nucleus with another particle. The first manmade nucleus was produced in Ernest Rutherford’s laboratory in 1919 by a transmutation reaction, the bombardment of one type of nuclei with other nuclei or with neutrons. Rutherford bombarded nitrogen-14 atoms with high-speed α particles from a natural radioactive isotope of radium and observed protons being...
Isotopes and Radioisotopes01:28

Isotopes and Radioisotopes

In the early 1900s, English chemist Frederick Soddy realized that an element could have atoms with different masses that were chemically indistinguishable. These different types are called isotopes — atoms of the same element that differ in mass. Isotopes differ in mass because they have different numbers of neutrons but are chemically identical because they have the same number of protons. Soddy was awarded the Nobel Prize in Chemistry in 1921 for this discovery.
An isotope containing more...

También podría leer

Artículos Relacionados

Artículos vinculados a este trabajo por autores compartidos, revista y gráfico de citas.

Ordenar por
Same author

Queen bees offload pesticide burden to eggs when social buffering is overwhelmed.

Current biology : CB·2026
Same author

Senescence Detection Using Reflected Light in Adipose Stromal Vascular Fraction.

Journal of visualized experiments : JoVE·2026
Same author

Bio-distribution and deposition of wildfire smoke chemicals into olfactory bulb and brain of rats after intranasal instillation.

Environmental research·2026
Same author

Adult neurogenesis: New neurons, new opportunities.

Cell stem cell·2026
Same author

Applications of Raman spectroscopy in the post-mortem interval estimation: a systematic literature review.

International journal of legal medicine·2026
Same author

Naphthalene-DNA Adduct Formation in a Lung Airway Explant Model: The Role of Bioactivation and Naphthalene Metabolites.

Chemical research in toxicology·2026

Video Experimental Relacionado

Updated: Jul 9, 2026

Production of Synthetic Nuclear Melt Glass
04:36

Production of Synthetic Nuclear Melt Glass

Published on: January 4, 2016

Forense: edad escrita en los dientes por las pruebas nucleares.

Kirsty L Spalding1, Bruce A Buchholz, Lars-Eric Bergman

  • 1Department of Cell and Molecular Biology, Medical Nobel Institute, 17177 Stockholm, Sweden.

Nature
|September 16, 2005
PubMed
Resumen

La datación por radiocarbono del esmalte dental, un método que utiliza las consecuencias de las pruebas de bombas nucleares, determina con precisión el año de nacimiento. Esta técnica ofrece una estimación precisa de la edad de los adultos, superando los métodos forenses tradicionales.

Más Videos Relacionados

Scanning Skeletal Remains for Bone Mineral Density in Forensic Contexts
07:56

Scanning Skeletal Remains for Bone Mineral Density in Forensic Contexts

Published on: January 29, 2018

Sampling and Pretreatment of Tooth Enamel Carbonate for Stable Carbon and Oxygen Isotope Analysis
07:57

Sampling and Pretreatment of Tooth Enamel Carbonate for Stable Carbon and Oxygen Isotope Analysis

Published on: August 15, 2018

Videos de Experimentos Relacionados

Last Updated: Jul 9, 2026

Production of Synthetic Nuclear Melt Glass
04:36

Production of Synthetic Nuclear Melt Glass

Published on: January 4, 2016

Scanning Skeletal Remains for Bone Mineral Density in Forensic Contexts
07:56

Scanning Skeletal Remains for Bone Mineral Density in Forensic Contexts

Published on: January 29, 2018

Sampling and Pretreatment of Tooth Enamel Carbonate for Stable Carbon and Oxygen Isotope Analysis
07:57

Sampling and Pretreatment of Tooth Enamel Carbonate for Stable Carbon and Oxygen Isotope Analysis

Published on: August 15, 2018

Área de la Ciencia:

  • Antropología forense antropología forense.
  • La datación por radiocarbono fue
  • Paleopatología Paleopatología.

Sus antecedentes:

  • La estimación precisa de la edad es crucial para la identificación individual en las investigaciones forenses.
  • Los métodos tradicionales para determinar la edad de los adultos al momento de la muerte, como la morfología esquelética y dental, tienen una precisión limitada (5-10 años).

Objetivo del estudio:

  • Evaluar la eficacia de los niveles de radiocarbono (carbono-14) en el esmalte dental como indicador preciso del año de nacimiento.
  • Para comparar la precisión de la datación por radiocarbono con los métodos convencionales para la estimación de la edad adulta.

Principales métodos:

  • Análisis de las concentraciones de radiocarbono (carbono-14) en el esmalte dental.
  • Utilizando la distintiva firma de radiocarbono de las pruebas mundiales de bombas nucleares (1955-1963).

Principales resultados:

  • Los niveles de radiocarbono en el esmalte dental sirven como un marcador altamente preciso para el año de nacimiento.
  • La estimación de la edad se logró con una precisión de 1,6 años.
  • Este método supera significativamente las evaluaciones morfológicas tradicionales en adultos.

Conclusiones:

  • El análisis de radiocarbono del esmalte dental proporciona un método nuevo y preciso para determinar el año de nacimiento en adultos.
  • Esta técnica mejora las capacidades de identificación forense al ofrecer una precisión superior en la estimación de la edad.