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

The de Broglie Wavelength02:32

The de Broglie Wavelength

25.9K
In the macroscopic world, objects that are large enough to be seen by the naked eye follow the rules of classical physics. A billiard ball moving on a table will behave like a particle; it will continue traveling in a straight line unless it collides with another ball, or it is acted on by some other force, such as friction. The ball has a well-defined position and velocity or well-defined momentum, p = mv, which is defined by mass m and velocity v at any given moment. This is the typical...
25.9K
Angular Momentum: Single Particle01:10

Angular Momentum: Single Particle

6.1K
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...
6.1K
Angle of Twist: Problem Solving01:13

Angle of Twist: Problem Solving

275
An electric motor applies a torque of 700 N·m to an aluminum shaft, triggering a stable rotation. Two pulleys, B and C, are subjected to torques of 300 N·m and 400 N·m, respectively. The modulus of rigidity is provided as 25 GPa. With the knowledge of the length and diameter of each segment, the twist angle between the two pulleys can be computed. First, a section cut is made between pulleys B and C, and the cut cross-section is analyzed using a free-body diagram. Given that the...
275
Angle of Twist - Elastic Range01:13

Angle of Twist - Elastic Range

291
Consider a cylindrical shaft with a length denoted by L and a consistent cross-sectional radius referred to as r. This shaft undergoes a torque at the free end. The highest shearing strain within the shaft is directly proportional to the twist angle and the radial distance from the shaft axis. When the shaft behaves elastically, this shearing strain can be articulated using variables such as the applied torque, radial distance, the polar moment of inertia, and the modulus of rigidity. By...
291
The Pauli Exclusion Principle03:06

The Pauli Exclusion Principle

37.7K
The arrangement of electrons in the orbitals of an atom is called its electron configuration. We describe an electron configuration with a symbol that contains three pieces of information:
37.7K
Angular Momentum about an Arbitrary Axis01:11

Angular Momentum about an Arbitrary Axis

199
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...
199

You might also read

Related Articles

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

Sort by
Same author

Encoding orbital angular momentum of light in space with optical catastrophes.

Nature communications·2026
Same author

Topological control of chirality and spin with structured light.

Light, science & applications·2026
Same author

Disordered mosaic metasurfaces with scalable functional density.

Nature communications·2026
Same author

Topological robustness of classical and quantum optical skyrmions in atmospheric turbulence.

Nature communications·2026
Same author

Revealing the topological nature of entangled orbital angular momentum states of light.

Nature communications·2025
Same author

All-on-chip reconfigurable generation of scalar and vectorial orbital angular momentum beams.

Light, science & applications·2025
Same journal

A tri-axis optomechanical accelerometer with plasmonic MIM waveguide and structural direction-dependent optical signatures.

Scientific reports·2026
Same journal

Holographic leaky-wave antennas with independently controlled multiple counter-rotating vortex beams.

Scientific reports·2026
Same journal

Differential associations of longitudinal hearing and vision trajectories with dementia and mild cognitive impairment in older adults.

Scientific reports·2026
Same journal

Abdominal obesity and leisure-time sedentary behavior in relation to gastroesophageal reflux disease risk: a prospective cohort study from the UK Biobank.

Scientific reports·2026
Same journal

Effect of nitrogen-rich COF incorporation on the structure and separation performance of polyamide nanofiltration membranes.

Scientific reports·2026
Same journal

Withanolide A inhibits hIAPP aggregation: An In silico, biophysical, and drosophila-based In vivo validation.

Scientific reports·2026
See all related articles

Related Experiment Video

Updated: Jul 9, 2025

Preparation of Liquid Crystal Networks for Macroscopic Oscillatory Motion Induced by Light
07:56

Preparation of Liquid Crystal Networks for Macroscopic Oscillatory Motion Induced by Light

Published on: September 20, 2017

11.7K

Popper's conjecture with angular slits and twisted light.

Neelan Gounden1, Jenna Epstein1, Pedro Ornelas1

  • 1School of Physics, University of the Witwatersrand, Private Bag 3, Wits, 2050, South Africa.

Scientific Reports
|December 8, 2023
PubMed
Summary
This summary is machine-generated.

Researchers tested Popper's conjecture using orbital angular momentum (OAM) and angular position. Entangled photons showed OAM spectra limited by the source, not the virtual slit, supporting the uncertainty principle in quantum optics.

More Related Videos

Fabrication and Characterization of Disordered Polymer Optical Fibers for Transverse Anderson Localization of Light
09:19

Fabrication and Characterization of Disordered Polymer Optical Fibers for Transverse Anderson Localization of Light

Published on: July 29, 2013

11.5K
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

7.1K

Related Experiment Videos

Last Updated: Jul 9, 2025

Preparation of Liquid Crystal Networks for Macroscopic Oscillatory Motion Induced by Light
07:56

Preparation of Liquid Crystal Networks for Macroscopic Oscillatory Motion Induced by Light

Published on: September 20, 2017

11.7K
Fabrication and Characterization of Disordered Polymer Optical Fibers for Transverse Anderson Localization of Light
09:19

Fabrication and Characterization of Disordered Polymer Optical Fibers for Transverse Anderson Localization of Light

Published on: July 29, 2013

11.5K
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

7.1K

Area of Science:

  • Quantum Physics
  • Optics
  • Photonics

Background:

  • Uncertainty relations are fundamental in classical and quantum physics.
  • Structured light, particularly photons with orbital angular momentum (OAM), offers new ways to test these relations across various degrees of freedom.

Purpose of the Study:

  • To test Popper's conjecture by replacing traditional spatial and momentum variables with angular position and OAM.
  • To investigate the influence of a virtual slit on the OAM spectrum of entangled photons.

Main Methods:

  • Generation of OAM-entangled photon pairs.
  • Encoding angular position using a digital hologram as a virtual slit.
  • Measurement of the OAM spectrum of one photon while the other interacts with the virtual slit.

Main Results:

  • The OAM spectrum of the entangled photon was limited by the initial spontaneous parametric down-conversion (SPDC) photons.
  • The measured OAM spectrum was independent of the OAM encoded into the virtual slit.
  • This outcome aligns with Popper's viewpoint on uncertainty relations.

Conclusions:

  • The study successfully adapted uncertainty relation tests to angular variables using structured light.
  • The findings overcome limitations of physical slits and linear momentum, providing a new quantum optics toolbox.
  • This work offers a versatile platform for exploring quantum systems and fundamental physics principles.