Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Mass Spectrometry: Molecular Fragmentation Overview01:20

Mass Spectrometry: Molecular Fragmentation Overview

6.7K
The ionization of a molecule into a molecular ion inside the mass spectrometer causes instability in the molecule's structure due to the loss of an electron. This eventually leads to the fragmentation or breaking of some bonds in the molecule. The fragmentation occurs predominantly at specific bonds to yield relatively stable fragments.
One type of fragmentation pattern is the cleavage of a single bond in the molecular ion. The cleavage leads to a radical and a cation. The cleavage can occur at...
6.7K
Insensitive Nuclei Enhanced by Polarization Transfer (INEPT)01:15

Insensitive Nuclei Enhanced by Polarization Transfer (INEPT)

1.2K
Insensitive Nuclei Enhanced by Polarization Transfer (INEPT) is an advanced Nuclear Magnetic Resonance (NMR) technique specifically designed to detect and enhance the signals of low-abundance nuclei, such as carbon-13 and nitrogen-15, in small molecules. The fundamental principle behind INEPT is the transfer of polarization from a more abundant and highly polarizable nucleus, typically hydrogen-1, to the low-abundance nucleus of interest. This process effectively boosts the NMR signal of the...
1.2K
π Electron Effects on Chemical Shift: Overview01:27

π Electron Effects on Chemical Shift: Overview

1.9K
An applied magnetic field causes loosely bound π-electrons in organic molecules to circulate, producing a local or induced diamagnetic field over a large spatial volume. As the molecules tumble in solution, the field generated by π-electrons in spherical substituents results in a zero net field. However, the net field generated by π-electrons in non-spherical substituents is not zero. The effect of this induced field depends on the orientation of the molecule with respect to B0,...
1.9K
Impulse-Momentum Theorem00:49

Impulse-Momentum Theorem

19.9K
The total change in the motion of an object is proportional to the total force vector acting on it and the time over which it acts. This product is called impulse, a vector quantity with the same direction as the total force acting on the object.
By writing Newton's second law of motion in terms of the momentum of an object and the external force acting on it, and simultaneously using the definition of the impulse vector, it can be shown that the total impulse on an object is equal to its...
19.9K
Vector Algebra: Method of Components01:08

Vector Algebra: Method of Components

20.6K
It is cumbersome to find the magnitudes of vectors using the parallelogram rule or using the graphical method to perform mathematical operations like addition, subtraction, and multiplication. There are two ways to circumvent this algebraic complexity. One way is to draw the vectors to scale, as in navigation, and read approximate vector lengths and angles (directions) from the graphs. The other way is to use the method of components.
In many applications, the magnitudes and directions of...
20.6K
Interference and Diffraction02:18

Interference and Diffraction

54.6K
Interference is a characteristic phenomenon exhibited by waves. When two electromagnetic waves interact with their peaks and troughs coinciding, a resulting wave with enhanced amplitude is produced. This is known as constructive interference. In this case, the two waves interacting are in phase with each other.
54.6K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

The Impact of Insomnia on Dementia Risk in Hypertensive Individuals.

In vivo (Athens, Greece)·2026
Same author

From paroxysmal hemicrania to SUNCT: a unique presentation of herpetic zoster ophthalmicus: a case report.

Frontiers in ophthalmology·2026
Same author

Risk of acute kidney injury and mortality in patients vaccinated against COVID-19.

International journal of medical sciences·2025
Same author

Code stroke of large vessel occlusion at triage improves candidate selection and workflow efficiency of endovascular thrombectomy.

The American journal of emergency medicine·2025
Same author

Photodissociation Dynamics of Formic Acid at 230 nm: A Computational Study of the CO and CO<sub>2</sub> Forming Channels.

The journal of physical chemistry. A·2025
Same author

Effect of SDF-1 and CXCR4 gene variants on the development of diabetic kidney disease.

International journal of medical sciences·2024

Related Experiment Video

Updated: Apr 7, 2026

Coulomb Explosion Imaging as a Tool to Distinguish Between Stereoisomers
08:51

Coulomb Explosion Imaging as a Tool to Distinguish Between Stereoisomers

Published on: August 18, 2017

11.1K

Insight into photofragment vector correlation by a multi-center impulsive model.

Po-Yu Tsai1, King-Chuen Lin

  • 1Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan. pytsai@dragon.nchu.edu.tw.

Physical Chemistry Chemical Physics : PCCP
|July 8, 2015
PubMed
Summary

This study extends a model to predict fragment vector correlations in formaldehyde photodissociation. It reveals looser correlations via the roaming pathway compared to the transition state route.

More Related Videos

Using Three-color Single-molecule FRET to Study the Correlation of Protein Interactions
11:22

Using Three-color Single-molecule FRET to Study the Correlation of Protein Interactions

Published on: January 30, 2018

10.7K
A Fluorescence Fluctuation Spectroscopy Assay of Protein-Protein Interactions at Cell-Cell Contacts
08:43

A Fluorescence Fluctuation Spectroscopy Assay of Protein-Protein Interactions at Cell-Cell Contacts

Published on: December 1, 2018

12.2K

Related Experiment Videos

Last Updated: Apr 7, 2026

Coulomb Explosion Imaging as a Tool to Distinguish Between Stereoisomers
08:51

Coulomb Explosion Imaging as a Tool to Distinguish Between Stereoisomers

Published on: August 18, 2017

11.1K
Using Three-color Single-molecule FRET to Study the Correlation of Protein Interactions
11:22

Using Three-color Single-molecule FRET to Study the Correlation of Protein Interactions

Published on: January 30, 2018

10.7K
A Fluorescence Fluctuation Spectroscopy Assay of Protein-Protein Interactions at Cell-Cell Contacts
08:43

A Fluorescence Fluctuation Spectroscopy Assay of Protein-Protein Interactions at Cell-Cell Contacts

Published on: December 1, 2018

12.2K

Area of Science:

  • Chemical Physics
  • Molecular Dynamics
  • Photochemistry

Background:

  • Formaldehyde photodissociation (H2CO → CO + H2) dynamics are complex.
  • Understanding fragment energy distribution and vector correlations is crucial.

Purpose of the Study:

  • To extend a multi-center impulsive model for predicting vector correlations in formaldehyde photodissociation.
  • To investigate the stereodynamics of the transition state (TS) and roaming pathways.
  • To clarify the origin of photofragment vector correlations.

Main Methods:

  • Utilized a multi-center impulsive model.
  • Predicted vector correlations (μ-j, j-j, μ-v) for fragments.
  • Compared results with quasi-classical trajectory simulations.

Main Results:

  • Model predictions align with quasi-classical trajectory simulations for TS and roaming paths.
  • Vector properties via the roaming path exhibit looser correlations than the TS route.
  • Identified distinct correlation patterns for different dissociation pathways.

Conclusions:

  • The extended model provides an alternative method for studying photodissociation stereodynamics.
  • The study highlights differences in vector correlations between TS and roaming pathways.
  • Offers insights into the origins of photofragment vector correlations, particularly for roaming.