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

Angular Momentum: Single Particle01:10

Angular Momentum: Single Particle

5.8K
Angular momentum is directed perpendicular to the plane of the rotation, and its magnitude depends on the choice of the origin. The perpendicular vector joining the linear momentum vector of an object to the origin is called the “lever arm.” If the lever arm and linear momentum are collinear, then the magnitude of the angular momentum is zero. Therefore, in this case, the object rotates about the origin such that it lies on the rim of the circumference defined by the lever arm...
5.8K
Angular Momentum01:21

Angular Momentum

1.0K
Angular momentum characterizes an object's rotational motion and is defined as the moment of its linear momentum about a specified point O. When a particle moves along a curved path in the x-y plane, the scalar formulation calculates the magnitude of its angular momentum, utilizing the moment arm (d), representing the perpendicular distance from point O to the line of action of the linear momentum. Despite being scalar in formulation, angular momentum is inherently a vector quantity. Its...
1.0K
Angular Momentum about an Arbitrary Axis01:11

Angular Momentum about an Arbitrary Axis

519
Imagine a rigid body with a mass denoted as 'm', which has its center of mass at point G and is rotating around an inertial reference frame. The angular momentum at an arbitrary point P can be calculated by taking the cross product of the position vector and linear momentum vector for each individual mass element.
The velocity of a mass element comprises its translational velocity and the relative velocity instigated by the body's rotation. Substituting the velocity equation into...
519
Conservation of Angular Momentum01:09

Conservation of Angular Momentum

12.6K
A system's total angular momentum remains constant if the net external torque acting on the system is zero. Considering a system that consists of n tiny particles, the angular momentum of any tiny particle may change, but the system's total angular momentum would remain constant. The principle of conservation of angular momentum only considers the net external torque acting on the system. While there are internal forces exerted by different particles within the system that also produce...
12.6K
Angular Momentum: Rigid Body01:11

Angular Momentum: Rigid Body

11.7K
The total angular momentum of a rigid body can be calculated using the summation of the angular momentum of all the tiny particles rotating in the same plane. Considering all the tiny particles rotating in the x-y plane, the direction of angular momentum of all such particles and that of the rigid body would be perpendicular to the plane of the rotation along the z-axis.
This calculation can get complicated when tiny particles within the rigid body are not rotating in the same plane but have...
11.7K
Euler Equations of Motion01:19

Euler Equations of Motion

728
Imagine a rigid body that is rotating at an angular velocity of ω within an inertial frame of reference. Along with this, picture a second rotating frame that is attached to the body itself. This frame moves along with the body and possesses an angular velocity of Ω. The total moment about the center of mass is calculated by adding the rate of change of angular momentum about the center of mass in relation to the rotating frame and the cross-product of the body's angular velocity...
728

You might also read

Related Articles

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

Sort by
Same author

Stokes and skyrmion tensors and their application to structured light.

Journal of the Optical Society of America. A, Optics, image science, and vision·2026
Same author

Reconfigurable free-space mode generation and detection enabled by an active photonic integrated circuit coupled to a passive mode-selective interface.

Communications physics·2026
Same author

Spiral phase infrared imaging with undetected photons using a visible wavelength spatial light modulator.

Scientific reports·2026
Same author

Optical Activity Modulation in Chiral Metasurfaces via Structured Light.

Nano letters·2025
Same author

Low-complexity turbulence resilience enabled by a multi-mode bi-directional transceiver.

Optics express·2025
Same author

Characterising the performance of a drone-mounted real-time methane imaging system.

Scientific reports·2025

Related Experiment Video

Updated: Apr 27, 2026

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
08:01

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

Published on: November 21, 2019

6.6K

Optical angular momentum in a rotating frame.

Fiona C Speirits, Martin P J Lavery, Miles J Padgett

    Optics Letters
    |July 1, 2014
    PubMed
    Summary
    This summary is machine-generated.

    A spinning observer does not change the orbital angular momentum (OAM) of light. However, the rotational Doppler effect causes a frequency shift, which is compensated by an opposite wavelength shift to maintain the constant speed of light.

    More Related Videos

    Methods for Measuring the Orientation and Rotation Rate of 3D-printed Particles in Turbulence
    12:34

    Methods for Measuring the Orientation and Rotation Rate of 3D-printed Particles in Turbulence

    Published on: June 24, 2016

    9.8K
    Author Spotlight: Insights into the Analysis of Human Interaction with 3D Virtual Objects
    06:36

    Author Spotlight: Insights into the Analysis of Human Interaction with 3D Virtual Objects

    Published on: October 18, 2024

    1.5K

    Related Experiment Videos

    Last Updated: Apr 27, 2026

    Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
    08:01

    Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

    Published on: November 21, 2019

    6.6K
    Methods for Measuring the Orientation and Rotation Rate of 3D-printed Particles in Turbulence
    12:34

    Methods for Measuring the Orientation and Rotation Rate of 3D-printed Particles in Turbulence

    Published on: June 24, 2016

    9.8K
    Author Spotlight: Insights into the Analysis of Human Interaction with 3D Virtual Objects
    06:36

    Author Spotlight: Insights into the Analysis of Human Interaction with 3D Virtual Objects

    Published on: October 18, 2024

    1.5K

    Area of Science:

    • Optics and Photonics
    • Quantum Mechanics
    • Classical Electrodynamics

    Background:

    • Light carrying orbital angular momentum (OAM) can induce mechanical torque, causing objects to spin.
    • The interaction of light with rotating observers is a fundamental question in physics.

    Purpose of the Study:

    • To investigate whether a spinning observer measures a change in light's OAM.
    • To analyze the effects of rotational Doppler shift on light's properties.

    Main Methods:

    • Theoretical analysis of light-observer interaction in a rotating frame.
    • Examination of angular Doppler shift and its impact on OAM.
    • Investigation of wavelength and frequency shifts under rotational motion.

    Main Results:

    • The orbital angular momentum (OAM) of light remains unchanged for a rotating observer.
    • The rotational Doppler effect induces a frequency shift in the incident light.
    • A compensating wavelength shift occurs, ensuring the constancy of the speed of light.

    Conclusions:

    • Observer's rotational velocity does not alter the light's OAM.
    • The rotational Doppler effect leads to predictable frequency and wavelength shifts.
    • These findings reconcile rotational motion with the fundamental principles of light propagation.