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 Uncertainty Principle04:08

The Uncertainty Principle

32.9K
Werner Heisenberg considered the limits of how accurately one can measure properties of an electron or other microscopic particles. He determined that there is a fundamental limit to how accurately one can measure both a particle’s position and its momentum simultaneously. The more accurate the measurement of the momentum of a particle is known, the less accurate the position at that time is known and vice versa. This is what is now called the Heisenberg uncertainty principle. He...
32.9K
Relative Reactivity of Carboxylic Acid Derivatives01:13

Relative Reactivity of Carboxylic Acid Derivatives

3.8K
Carboxylic acid derivatives such as acid halides, anhydrides, esters, and amides undergo nucleophilic acyl substitution reactions with varying degrees of reactivity.
A key factor in assessing the reactivity of the acid derivatives is the basicity of the substituent or the leaving group. The lower the basicity of the leaving group, the higher the reactivity of the derivative. The basicity of the leaving group follows this order:
Halide ions < Acyloxy ions < Alkoxy ions < Amine ions
3.8K
Uncertainty in Measurement: Reading Instruments02:46

Uncertainty in Measurement: Reading Instruments

53.6K
Counting is the type of measurement that is free from uncertainty, provided the number of objects being counted does not change during the process. Such measurements result in exact numbers. By counting the eggs in a carton, for instance, one can determine exactly how many eggs are there in the carton. Similarly, the numbers of defined quantities are also exact. For example, 1 foot is exactly 12 inches, 1 inch is exactly 2.54 centimeters, and 1 gram is exactly 0.001 kilograms. Quantities...
53.6K
Space-Time Curvature and the General Theory of Relativity01:17

Space-Time Curvature and the General Theory of Relativity

4.5K
In 1905, Albert Einstein published his special theory of relativity. According to this theory, no matter in the universe can attain a speed greater than the speed of light in a vacuum, which thus serves as the speed limit of the universe.
This has been verified in many experiments. However, space and time are no longer absolute. Two observers moving relative to one another do not agree on the length of objects or the passage of time. The mechanics of objects based on Newton's laws of...
4.5K
Classical Conditioning01:18

Classical Conditioning

2.4K
Associative learning, a core principle in behavioral psychology, involves forming connections between events and facilitating learned responses. This concept is vividly illustrated by classical conditioning, a process extensively studied by the Russian physiologist Ivan Pavlov. Pavlov's pioneering research on dogs' digestive systems led to the discovery that behaviors can be learned through association, laying the groundwork for classical conditioning.
Ivan Pavlov observed that dogs...
2.4K
Uncertainty: Overview00:59

Uncertainty: Overview

1.8K
In analytical chemistry, we often perform repetitive measurements to detect and minimize inaccuracies caused by both determinate and indeterminate errors. Despite the cares we take, the presence of random errors means that repeated measurements almost never have exactly the same magnitude. The collective difference between these measurements - observed values - and the estimated or expected value is called uncertainty. Uncertainty is conventionally written after the estimated or expected value.
1.8K

También podría leer

Artículos Relacionados

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

Ordenar por
Same author

Deep potential-driven molecular dynamics of CO ice analogs: Investigating desorption following vibrational excitation.

The Journal of chemical physics·2025
Same author

Classical dynamics in a quantum spirit: Refining semi-classical corrections for the scattering of H2 on W(100).

The Journal of chemical physics·2025
Same author

A practical quasi-classical trajectory method to avoid zero-point energy leakage in dissociative chemisorption of polyatomic molecules on surfaces.

The Journal of chemical physics·2025
Same author

The Experimental Rate Constant of the <i>S</i> <sup>+</sup>(<sup>2</sup> <i>D</i>) + <i>H</i> <sub>2</sub> Reaction.

ACS earth & space chemistry·2025
Same author

Photodesorption of CO ices: Rotational and translational energy distributions.

The Journal of chemical physics·2024
Same author

A quasi-classical study in a quantum spirit of mode specificity of the H + HOD abstraction reaction.

Physical chemistry chemical physics : PCCP·2024

Video Experimental Relacionado

Updated: Feb 11, 2026

Split Point Analysis and Uncertainty Quantification of Thermal-Optical Organic/Elemental Carbon Measurements
10:22

Split Point Analysis and Uncertainty Quantification of Thermal-Optical Organic/Elemental Carbon Measurements

Published on: September 7, 2019

8.8K

Combinando la dispersión reactiva clásica y la relación de incertidumbre tiempo-energía.

Laurent Bonnet1, Maurice Monnerville2

  • 1Univ. Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, F-33400 Talence, France. claude-laurent.bonnet@u-bordeaux.fr.

Physical chemistry chemical physics : PCCP
|February 10, 2026
PubMed
Resumen

El binning gaussiano mejora las simulaciones de dinámica clásica para reacciones químicas al asignar pesos estadísticos a las trayectorias. Este estudio extiende el método a los complejos activados, mejorando las predicciones de probabilidad de reacción.

Más Videos Relacionados

Measuring the Time-Evolution of Nanoscale Materials with Stopped-Flow and Small-Angle Neutron Scattering
07:53

Measuring the Time-Evolution of Nanoscale Materials with Stopped-Flow and Small-Angle Neutron Scattering

Published on: August 6, 2021

2.7K
In vivo Imaging of Biological Tissues with Combined Two-Photon Fluorescence and Stimulated Raman Scattering Microscopy
09:06

In vivo Imaging of Biological Tissues with Combined Two-Photon Fluorescence and Stimulated Raman Scattering Microscopy

Published on: December 20, 2021

3.8K

Videos de Experimentos Relacionados

Last Updated: Feb 11, 2026

Split Point Analysis and Uncertainty Quantification of Thermal-Optical Organic/Elemental Carbon Measurements
10:22

Split Point Analysis and Uncertainty Quantification of Thermal-Optical Organic/Elemental Carbon Measurements

Published on: September 7, 2019

8.8K
Measuring the Time-Evolution of Nanoscale Materials with Stopped-Flow and Small-Angle Neutron Scattering
07:53

Measuring the Time-Evolution of Nanoscale Materials with Stopped-Flow and Small-Angle Neutron Scattering

Published on: August 6, 2021

2.7K
In vivo Imaging of Biological Tissues with Combined Two-Photon Fluorescence and Stimulated Raman Scattering Microscopy
09:06

In vivo Imaging of Biological Tissues with Combined Two-Photon Fluorescence and Stimulated Raman Scattering Microscopy

Published on: December 20, 2021

3.8K

Área de la Ciencia:

  • La Dinámica Química es la Dinámica Química.
  • Química computacional es la química computacional.
  • Química Física es la química física.

Sus antecedentes:

  • El binning gaussiano, utilizado desde principios de la década de 2000, refina las simulaciones dinámicas clásicas para predecir secciones transversales con resolución de estado en experimentos de haz molecular.
  • El método asigna pesos estadísticos gaussianos a las trayectorias clásicas, priorizando las energías del producto cerca de los valores cuantificados.

Objetivo del estudio:

  • Para extender el binning gaussiano a los complejos activados en reacciones químicas.
  • Para incorporar estados estacionarios y dependientes del tiempo del complejo activado.
  • Para mejorar la precisión de los cálculos de probabilidad de reacción.

Principales métodos:

  • Tratar el complejo activado como un estado estacionario con pesos gaussianos estrechos.
  • Tratar el complejo activado como un estado dependiente del tiempo con pesos gaussianos ampliados, consistente con la relación de incertidumbre tiempo-energía.
  • Acoplamiento del enfoque dependiente del tiempo con cálculos de túneles a través de barreras parabólicas adiabáticas.

Principales resultados:

  • Se aplicaron los métodos de binning gaussiano extendido para calcular las probabilidades de reacción para procesos modelo con complejos activados de larga y corta vida.
  • Las probabilidades de reacción calculadas mostraron una muy buena concordancia con las probabilidades cuánticas.
  • El análisis de las formas cuánticas de probabilidad se realizó utilizando la dinámica clásica y la relación de incertidumbre tiempo-energía.

Conclusiones:

  • El método extendido de binning gaussiano proporciona predicciones precisas de las probabilidades de reacción.
  • El estudio ofrece información sobre la relación entre la dinámica clásica, la relación de incertidumbre tiempo-energía y las probabilidades cuánticas.
  • La investigación examina posibles violaciones de la energía del punto cero en el estado de transición.