Related Experiment Video
Updated: May 25, 2026

Generating Strictly Controlled Stimuli for Figure Recognition Experiments
Published on: March 18, 2019
Aggregate behavior of branch points--persistent pairs
Denis W Oesch1, Darryl J Sanchez, Carolyn M Tewksbury-Christle
1Science Applications International Corporation, Albuquerque, New Mexico, USA. denis.w.oesch@saic.com
Abstract:
Light propagating through atmospheric turbulence acquires spatial and temporal phase variations. For strong enough turbulence conditions, interference from these phase variations within the optical wave can produce branch points; positions of zero amplitude. Under the assumption of a layered turbulence model, our previous work has shown that these branch points can be used to estimate the number and velocities of atmospheric layers. Key to this previous demonstration was the property of branch point persistence. Branch points from a single turbulence layer persist in time and through additional layers. In this paper we extend persistence to include branch point pairs. We develop an algorithm for isolating persistent pairs and show that through experimental data that they exist through time and through additional turbulence.
Related Concept Videos
Radical Chain-Growth Polymerization: Chain Branching
Polymer Classification: Architecture
Anchoring Junctions
Structural Classification of Joints
A fibrous joint is where the adjacent bones are united by fibrous connective...
Generation of Straight or Branched Actin Filaments
Arp2/3 Complex
Arp2/3 complex is a seven-subunit complex consisting of two proteins similar to actin- Arp2 and Arp3, and five other subunits that help keep Arp2 and Arp3 inactive. When required, the complex is...
VSEPR Theory and the Effect of Lone Pairs

