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

Open and closed-loop control systems01:17

Open and closed-loop control systems

1.8K
Control systems are foundational elements in automation and engineering. They are broadly categorized into open-loop and closed-loop systems. These classifications hinge on the presence or absence of feedback mechanisms, significantly influencing the system's performance, complexity, and application.
An open-loop control system operates without feedback from the output. It consists of two primary elements: the controller and the controlled process. The controller receives an input signal...
1.8K
Finishing Concrete01:18

Finishing Concrete

345
Concrete finishing starts immediately after the concrete has been placed and consolidated. The initial step, screeding, involves leveling the concrete surface by removing excess material to flush it with the formwork's top. Following this, bull float or darby are employed to smooth the surface further, effectively lower high spots, fill low areas, and ensure larger aggregate particles are embedded within the concrete. This preparation is critical before the appearance of bleed water, as its...
345
Feedback Loops01:01

Feedback Loops

64.8K
In most cases, excessive hormone production is prevented by negative feedback—a loop that starts with a stimulus inducing the release of a particular substance, like a hormone, to maintain a certain level before triggering a signal that results in a decrease in further release of the hormone.
64.8K
Close Relationships and Culture01:29

Close Relationships and Culture

251
Culture shapes how people approach attraction, choose partners, and build long-term relationships. While some preferences in mate selection appear consistent across cultures, such as men valuing physical attractiveness and women emphasizing financial resources, cultural contexts influence how these preferences are expressed and prioritized. Marriage extends beyond romantic ideals in many societies and is deeply embedded in social, economic, and religious frameworks.The Role of Culture in Mate...
251
Friendships and Close Friendships01:20

Friendships and Close Friendships

245
Friendship formation is a dynamic process shaped by psychological, cultural, and social factors. Friendships play a crucial role in emotional well-being, social development, and personal identity from childhood to adulthood.Childhood and Early FriendshipsFriendships in childhood often arise due to shared environments, such as school or neighborhood interactions. At this stage, proximity and common interests serve as the primary basis for connection. As children grow, their friendships evolve...
245
Positive and Negative Feedback Loops01:18

Positive and Negative Feedback Loops

25.5K
Animal organs and organ systems constantly adjust to internal and external changes through a process called homeostasis ("steady state"). Examples of these changes include regulation of the level of glucose or calcium in the blood or internal responses to external temperatures. Homeostasis requires  maintaining an internal dynamic equilibrium:
25.5K

You might also read

Related Articles

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

Sort by
Same author

Release and recapture of silica nanoparticles from an optical trap in weightlessness.

NPJ microgravity·2026
Same author

Soft magnetic microrobots with remote sensing and communication capabilities.

Nature communications·2025
Same author

Flavonoids Derived from the Roots of <i>Lespedeza bicolor</i> Inhibit the Activity of SARS-CoV Papain-like Protease.

Plants (Basel, Switzerland)·2024
Same author

Predicting circadian phase in community-dwelling later-life adults using actigraphy data.

Journal of sleep research·2024
Same author

The real-world association between digital markers of circadian disruption and mental health risks.

NPJ digital medicine·2024
Same author

The Combination of Topological Data Analysis and Mathematical Modeling Improves Sleep Stage Prediction From Consumer-Grade Wearables.

Journal of biological rhythms·2024
Same journal

Multifunctional reconfigurable terahertz metasurface based on vanadium dioxide phase transition: achieving broadband absorption and efficient polarization conversion.

Applied optics·2026
Same journal

High-Q-factor electromagnetically induced transparency utilizing quasi-bound states in the continuum in an all-dielectric terahertz metasurface.

Applied optics·2026
Same journal

Automated stitching interferometry for high-precision metrology of X-ray mirrors.

Applied optics·2026
Same journal

Experimental demonstration of an approach to designing a metal-dielectric DBR resonant cavity structure.

Applied optics·2026
Same journal

High-precision wavefront reconstruction from a single-shot interferogram using a physics-driven hybrid feature calibration network.

Applied optics·2026
Same journal

Ultra-high-Q Fano resonance based on coupled topological corner states in Kagome photonic crystals.

Applied optics·2026
See all related articles

Related Experiment Video

Updated: Feb 15, 2026

Convergent Polishing: A Simple, Rapid, Full Aperture Polishing Process of High Quality Optical Flats & Spheres
13:07

Convergent Polishing: A Simple, Rapid, Full Aperture Polishing Process of High Quality Optical Flats & Spheres

Published on: December 1, 2014

11.7K

Closed-loop laser polishing using in-process surface finish metrology.

Oliver Faehnle, Rolf Rascher, Christian Vogt

    Applied Optics
    |February 6, 2018
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces a closed-loop polishing process for optical elements, using in-process testing to determine optimal polishing times. This method ensures stable, cost-effective surface finishing for improved microsurface quality.

    More Related Videos

    Plasma Polishing as a New Polishing Option to Reduce the Surface Roughness of Porous Titanium Alloy for 3D Printing
    06:12

    Plasma Polishing as a New Polishing Option to Reduce the Surface Roughness of Porous Titanium Alloy for 3D Printing

    Published on: April 28, 2023

    2.4K
    Impact of Fabrication Techniques and Polishing Procedures on Surface Roughness of Denture Base Resins
    03:02

    Impact of Fabrication Techniques and Polishing Procedures on Surface Roughness of Denture Base Resins

    Published on: January 17, 2025

    1.1K

    Related Experiment Videos

    Last Updated: Feb 15, 2026

    Convergent Polishing: A Simple, Rapid, Full Aperture Polishing Process of High Quality Optical Flats & Spheres
    13:07

    Convergent Polishing: A Simple, Rapid, Full Aperture Polishing Process of High Quality Optical Flats & Spheres

    Published on: December 1, 2014

    11.7K
    Plasma Polishing as a New Polishing Option to Reduce the Surface Roughness of Porous Titanium Alloy for 3D Printing
    06:12

    Plasma Polishing as a New Polishing Option to Reduce the Surface Roughness of Porous Titanium Alloy for 3D Printing

    Published on: April 28, 2023

    2.4K
    Impact of Fabrication Techniques and Polishing Procedures on Surface Roughness of Denture Base Resins
    03:02

    Impact of Fabrication Techniques and Polishing Procedures on Surface Roughness of Denture Base Resins

    Published on: January 17, 2025

    1.1K

    Area of Science:

    • Optical Engineering
    • Materials Science
    • Manufacturing Processes

    Background:

    • Traditional optical element polishing often lacks precise control over polishing duration.
    • Achieving consistent microsurface quality (surface roughness, scratch-and-dig) is critical for optical performance.

    Purpose of the Study:

    • To develop and validate a closed-loop polishing process for optical elements.
    • To enable the determination of optimum polishing dwell times for enhanced quality and cost-efficiency.

    Main Methods:

    • An in-process testing method was developed to monitor microsurface quality within the polishing spot.
    • The method's applicability was experimentally verified for both loose-abrasive and laser polishing techniques.

    Main Results:

    • The in-process testing effectively monitored microsurface quality during polishing.
    • The closed-loop approach enabled precise control over local dwell time, optimizing the polishing process.

    Conclusions:

    • This closed-loop polishing process allows for the application of optimum polishing times.
    • The developed method leads to stable, cost-optimized polishing of optical elements with improved microsurface quality.