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

Fischer Projections02:18

Fischer Projections

Learning to draw Fischer projections of molecules and understanding their relevance plays a crucial role in the visual depiction of organic molecules. A Fischer projection is a two-dimensional projection on a planar surface to simplify the three-dimensional wedge–dash representation of molecules. This is especially helpful in the case of molecules with multiple chiral centers that can be difficult to draw. Here, all the bonds of interest are represented as horizontal or vertical lines. While...
Atomic Force Microscopy01:08

Atomic Force Microscopy

Atomic force microscopy (AFM) is a type of scanning probe microscopy that can analyze topographic details of various specimens like ceramics, glass, polymers, and biological samples. AFM offers over 1000 times more resolution than the optical imaging system. Images generated from AFM are three-dimensional surface profiles, offering an advantage over the flat, two-dimensional images from other imaging techniques.
The AFM Probe
The probe is regarded as the heart of any AFM setup and comprises the...
Gauss's Law: Planar Symmetry01:27

Gauss's Law: Planar Symmetry

A planar symmetry of charge density is obtained when charges are uniformly spread over a large flat surface. In planar symmetry, all points in a plane parallel to the plane of charge are identical with respect to the charges. Suppose the plane of the charge distribution is the xy-plane, and the electric field at a space point P with coordinates (x, y, z) is to be determined. Since the charge density is the same at all (x, y) - coordinates in the z = 0 plane, by symmetry, the electric field at P...
Computed Tomography01:10

Computed Tomography

Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
Parallel-Axis Theorem for an Area01:12

Parallel-Axis Theorem for an Area

The moment of inertia is a fundamental concept in mechanical engineering that plays a significant role in designing rotationally symmetric objects such as flywheels, gears, and other mechanical systems. In this context, we will discuss the moment of inertia of a flywheel rotating about its centroidal axis and how it relates to the moment of inertia about an axis parallel to it.
For a flywheel approximated as a solid disc, consider an infinitesimal differential element with an arbitrary distance...
Interpretations of Partial Derivatives01:14

Interpretations of Partial Derivatives

A surface defined by a function of two variables can be visualized as a vast, uneven terrain, where each point is identified using Cartesian coordinates. The elevation of the terrain at any point is determined by a function that assigns a height value to every pair of horizontal coordinates. This representation allows the surface to be studied in terms of how its height varies across different directions.At a specific point on this terrain, understanding how the height changes requires...

También podría leer

Artículos Relacionados

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

Ordenar por
Same author

Multiple outflows and delayed ejections revealed by early imaging of novae.

Nature astronomy·2026
Same author

Passivation Species Suppress Atom-by-Atom Wear of Microcrystalline Diamond.

ACS applied materials & interfaces·2025
Same author

Transport of dust across the Solar System: Constraints on the spatial origin of individual micrometeorites from cosmic-ray exposure.

Philosophical transactions. Series A, Mathematical, physical, and engineering sciences·2024
Same author

A dynamical measure of the black hole mass in a quasar 11 billion years ago.

Nature·2024
Same author

Interferometric Imaging Using Shared Quantum Entanglement.

Physical review letters·2023
Same author

Modern Tools for Modern Brachytherapy.

Clinical oncology (Royal College of Radiologists (Great Britain))·2023

Video Experimental Relacionado

Updated: Jul 10, 2026

Bringing the Visible Universe into Focus with Robo-AO
10:35

Bringing the Visible Universe into Focus with Robo-AO

Published on: February 12, 2013

Tomando imágenes de la superficie de Altair.

John D Monnier1, M Zhao, E Pedretti

  • 1Department of Astronomy, University of Michigan, Ann Arbor, MI 48109, USA. monnier@umich.edu

Science (New York, N.Y.)
|June 2, 2007
PubMed
Resumen

Tomamos imágenes de la estrella Altair utilizando interferometría avanzada, revelando su superficie distorsionada debido a la rápida rotación. Los modelos estándar no pudieron explicar el oscurecimiento de la gravedad observado, lo que sugiere patrones de rotación complejos.

Más Videos Relacionados

Precision Measurements and Parametric Models of Vertebral Endplates
10:35

Precision Measurements and Parametric Models of Vertebral Endplates

Published on: September 17, 2019

Surface Mapping of Earth-like Exoplanets using Single Point Light Curves
06:48

Surface Mapping of Earth-like Exoplanets using Single Point Light Curves

Published on: May 10, 2020

Videos de Experimentos Relacionados

Last Updated: Jul 10, 2026

Bringing the Visible Universe into Focus with Robo-AO
10:35

Bringing the Visible Universe into Focus with Robo-AO

Published on: February 12, 2013

Precision Measurements and Parametric Models of Vertebral Endplates
10:35

Precision Measurements and Parametric Models of Vertebral Endplates

Published on: September 17, 2019

Surface Mapping of Earth-like Exoplanets using Single Point Light Curves
06:48

Surface Mapping of Earth-like Exoplanets using Single Point Light Curves

Published on: May 10, 2020

Área de la Ciencia:

  • * Astrofísica es la astrofísica.
  • * Física Estelar La física estelar es la física estelar.
  • * Interferometría óptica con interferometría óptica.

Sus antecedentes:

  • * Comprender las superficies estelares es crucial para la física estelar.
  • * Las estrellas que giran rápidamente exhiben propiedades fotosféricas únicas.
  • * La interferometría óptica de larga línea de base ofrece imágenes de alta resolución de la superficie estelar.

Objetivo del estudio:

  • * Para construir una imagen de alta resolución en el infrarrojo cercano de la estrella Altair, que gira rápidamente.
  • * Para investigar los efectos de la rotación rápida en las fotosferas estelares.
  • * Para probar modelos estelares estándar con datos de observación.

Principales métodos:

  • * Interferometría óptica de línea de base larga empleada.
  • * Logró imágenes de resolución inferior a un milisegundo de arco.
  • * Se centra en las longitudes de onda del infrarrojo cercano.

Principales resultados:

  • * Generó una imagen en infrarrojo cercano de Altair con una resolución sin precedentes.
  • * Se observó claramente un oscurecimiento significativo por gravedad a través de la fotosfera estelar.
  • * Se ha detectado un alto grado de distorsión fotosférica.

Conclusiones:

  • * Los modelos estándar de estrellas que giran uniformemente son insuficientes para explicar la superficie observada en Altair.
  • * Los hallazgos sugieren la presencia de rotación diferencial o leyes de oscurecimiento de la gravedad no estándar.
  • * Se necesita más investigación para refinar los modelos de rotación estelar y oscurecimiento por gravedad.