Video Experimental Relacionado
Updated: Jul 9, 2026
09:12
A Method for Studying the Temperature Dependence of Dynamic Fracture and Fragmentation
Published on: June 28, 2015
ASTRÓFÍSICA: Los astrónomos detectan su primera bomba de carbono
Science (New York, N.Y.)
|September 6, 2007
Resumen
Una explosión termonuclear alimentada con carbono en una estrella ultradensa.
Área de la Ciencia:
- La astrofísica es la astrofísica.
- Evolución Estelar Evolución Estelar
Sus antecedentes:
- Las explosiones termonucleares en las estrellas suelen involucrar hidrógeno o helio.
- Comprender la combustión estelar es clave para la astrofísica.
Objetivo del estudio:
- Para informar sobre el posible descubrimiento de una explosión estelar termonuclear de solo carbono.
- Para investigar las implicaciones para los modelos estelares.
Principales métodos:
- Observación de un evento de explosión cósmica.
- Análisis de la composición elemental de la explosión.
Principales resultados:
- Una explosión termonuclear de 3 horas en la superficie de una estrella ultradensa.
- La explosión parece ser alimentada únicamente por el carbono.
Conclusiones:
- Este evento podría ser la primera explosión cósmica observada impulsada exclusivamente por el carbono.
- La confirmación puede llevar a revisiones en los modelos de combustión estelar y detonación de carbono.
Videos de Conceptos Relacionados
01:33Atomic Structure
All matter is composed of atoms, the smallest individual units of elements. Each atom is made up of three subatomic particles: protons, neutrons, and electrons. Together, these three particles account for the mass and the charge of an atom.The History of Atomic TheoryThe first person to propose that everything on Earth is made up of tiny particles was the Greek philosopher Democritus, around 450 B.C. He used the term atomos, Greek for “indivisible,” from which the modern term “atom” is derived.
02:06Conditions on Early Earth
Around 4 billion years ago, oceans began to condense on earth while volcanic eruptions released nitrogen, carbon dioxide, methane, ammonia, and hydrogen into the primordial atmosphere. However, organisms with the characteristics of life were not initially present on earth. Scientists have used experimentation to determine how organisms evolved that could grow, reproduce, and maintain an internal environment.
03:37Subatomic Particles
Dalton was only partially correct about the particles that make up matter. All matter is composed of atoms, and atoms are composed of three smaller subatomic particles: protons, neutrons, and electrons. These three particles account for the mass and the charge of an atom.
02:41Constant Volume Calorimetry
Calorimeters are useful to determine the heat released or absorbed by a chemical reaction. Coffee cup calorimeters are designed to operate at constant (atmospheric) pressure and are convenient to measure heat flow (or enthalpy change) accompanying processes that occur in solution at constant pressure. A different type of calorimeter that operates at constant volume, colloquially known as a bomb calorimeter, is used to measure the energy produced by reactions that yield large amounts of heat and...
02:06Conditions on Early Earth
Around 4 billion years ago, oceans began to condense on earth while volcanic eruptions released nitrogen, carbon dioxide, methane, ammonia, and hydrogen into the primordial atmosphere. However, organisms with the characteristics of life were not initially present on earth. Scientists have used experimentation to determine how organisms evolved that could grow, reproduce, and maintain an internal environment.
01:17Atomic Structure
The Greek philosopher Democritus proposed that everything on Earth is made up of tiny particles called atomos, Greek for "indivisible," from which the modern term "atom" is derived. In the 19th century, John Dalton proposed the atomic theory that is still largely correct today. He put forth five postulates to explain how atoms made up the world around us. (1) All matter is composed of infinitely small particles or atoms. (2) All atoms of a given element are identical to one another and (3) are...