Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Uncertainty in Measurement: Reading Instruments

Uncertainty in Measurement: Reading Instruments

Counting is the type of measurement that is free from uncertainty, provided the number of objects being counted does not change during the process. Such measurements result in exact numbers. By counting the eggs in a carton, for instance, one can determine exactly how many eggs are there in the carton. Similarly, the numbers of defined quantities are also exact. For example, 1 foot is exactly 12 inches, 1 inch is exactly 2.54 centimeters, and 1 gram is exactly 0.001 kilograms. Quantities...

Gauss's Law: Cylindrical Symmetry

Gauss's Law: Cylindrical Symmetry

A charge distribution has cylindrical symmetry if the charge density depends only upon the distance from the axis of the cylinder and does not vary along the axis or with the direction about the axis. In other words, if a system varies if it is rotated around the axis or shifted along the axis, it does not have cylindrical symmetry. In real systems, we do not have infinite cylinders; however, if the cylindrical object is considerably longer than the radius from it that we are interested in,...

You might also read

Related Articles

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

Sort by

Same author

Spin-Dominated Electroreduction of Oxygen to Hydrogen Peroxide: A Case Study With Molecular Model Catalysts.

Angewandte Chemie (International ed. in English)·2026

Same author

Immune biomarker landscape and fusion partner-phenotype associations in thoracic and head-and-neck NUT carcinoma.

Frontiers in immunology·2026

Same author

The safety and tolerability of oral TDF/FTC as pre-exposure prophylaxis among men who have sex with men in China: a prospective cohort study.

BMC infectious diseases·2026

Same author

PrecLLM: A Privacy-Preserving Framework for Efficient Clinical Annotation Extraction from Unstructured EHRs using Small-Scale LLMs.

Research square·2026

Same author

Trait-based signatures associated with persistence and thermal benefit in a genomically decayed coral probiotic.

The ISME journal·2026

Same author

Correction: mTORC1 is a target of nordihydroguaiaretic acid to prevent breast tumor growth in vitro and in vivo.

Breast cancer research and treatment·2026

Same journal

Gaussian-modulated continuous-variable quantum key distribution over 60 km fiber using an integrated silicon photonic receiver.

Optics letters·2026

Same journal

E2E-OCT: end-to-end joint learning model using optical coherence tomography images for vocal cord leukoplakia diagnosis.

Optics letters·2026

Same journal

Holographic generation of panoramic 3D scenes by concave ellipsoidal mirror reflection.

Optics letters·2026

Same journal

Dual-pilot phase recovery with pair-wise maximum-ratio combining for coherent PONs.

Optics letters·2026

Same journal

Mapping the whispering gallery modes of a CaF<sub>2</sub> disk resonator with half-tapered fibers to estimate the fundamental mode volume.

Optics letters·2026

Same journal

Quantitative estimation of deep-subwavelength scale via dark-field scattering axial energy concentration decay profiles.

Optics letters·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Sep 25, 2025

Measuring the Complete-arch Distortion of an Optical Dental Impression

Measuring the Complete-arch Distortion of an Optical Dental Impression

Published on: May 30, 2019

Quasi-absolute interferometric testing of cylinders.

Shanyong Chen, Yifan Dai, Dede Zhai

|April 29, 2022

Summary

This summary is machine-generated.

A new quasi-absolute testing method accurately measures optical cylinder surface errors. This three-step process uses computer-generated holograms for precise, traceable results, validated experimentally.

More Related Videos

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

Published on: August 12, 2013

An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids

An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids

Published on: December 4, 2017

Related Experiment Videos

Last Updated: Sep 25, 2025

Measuring the Complete-arch Distortion of an Optical Dental Impression

Measuring the Complete-arch Distortion of an Optical Dental Impression

Published on: May 30, 2019

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

Published on: August 12, 2013

An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids

An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids

Published on: December 4, 2017

Area of Science:

Optics
Metrology
Surface testing

Background:

Accurate measurement of optical cylinder surface error is crucial for optical system performance.
Existing methods may lack absolute accuracy or require complex setups.

Purpose of the Study:

To propose and validate a novel three-step quasi-absolute testing method for optical cylinders.
To achieve traceable and accurate surface error measurement using computer-generated holograms (CGH).

Main Methods:

Employing a three-step measurement procedure at specific positions (cat's eye, confocal null).
Rotating a computer-generated hologram (CGH) around the cylinder's axis.
Processing measurement data through simple addition/subtraction and data flipping.

Main Results:

The quasi-absolute surface error of the optical cylinder is obtained with high accuracy.
The method's uncertainty is traceable to an optical flat standard.
Consistent results were achieved using two different CGHs for a convex cylinder.

Conclusions:

The proposed three-step quasi-absolute testing method is effective for optical cylinders.
Experimental validation confirms the method's reliability and accuracy.
This technique offers a practical solution for precise optical metrology.