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

$Influence of Earth's Curvature and Atmospheric Refraction on Leveling$ 01:26

Influence of Earth's Curvature and Atmospheric Refraction on Leveling

During leveling, the Earth's curvature and atmospheric refraction introduce deviations in the line of sight from a true horizontal reference. When the line of sight is leveled, it remains perpendicular to the plumb line only at a single point. Beyond this, it deviates due to the Earth’s curvature, represented by the correction C. For a sight distance D, the deviation can be derived using the relationship:This relationship shows that the deviation increases quadratically with distance.

Gyroscope: Precession

Gyroscope: Precession

Precession can be demonstrated effectively through a spinning top. If a spinning top is placed on a flat surface near the surface of the Earth at a vertical angle and is not spinning, it will fall over due to the force of gravity producing a torque acting on its center of mass. However, if the top is spinning on its axis, it precesses about the vertical direction, rather than topple over due to this torque. Precessional motion is a combination of a steady circular motion of the axis and the...

Propagation of Waves

Propagation of Waves

When a wave propagates from one medium to another, part of it may get reflected in the first medium, and part of it may get transmitted to the second medium. In such a case, the interface of the two mediums can be considered as a boundary that is neither fixed nor free.
Consider a scenario where a wave propagates from a string of low linear mass density to a string of high linear mass density. In such a case, the reflected wave is out of phase with respect to the incident wave, however the...

Angle Closure Glaucoma: Treatment

Angle Closure Glaucoma: Treatment

Angle-closure glaucoma, or closed-angle glaucoma, is an eye condition where the iris bulges out and blocks the iridocorneal angle, resulting in a buildup of aqueous humor and increased intraocular pressure. Immediate medical attention is necessary due to the sudden onset of symptoms. The treatment for angle-closure glaucoma includes short-term and long-term approaches. Short-term treatment involves using eye drops like pilocarpine to lower intraocular pressure by increasing aqueous humor...

You might also read

Related Articles

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

Sort by

Same author

[Integrated regional network construction for ST-segment elevation myocardial infarction care].

Zhonghua xin xue guan bing za zhi·2014

Same author

[Wearable cardioverter-defibrillator use in patients after myocardial infarction].

Zhonghua xin xue guan bing za zhi·2014

Same author

Expression and function of Toll-like receptors in peripheral blood mononuclear cells from patients with ovarian cancer.

Cancer immunology, immunotherapy : CII·2014

Same author

Multimedia model for polycyclic aromatic hydrocarbons (PAHs) and nitro-PAHs in Lake Michigan.

Environmental science & technology·2014

Same author

[Expression and localization of the nuclear factor-κB classical signaling pathway in the radial artery of diabetic patients].

Zhonghua wai ke za zhi [Chinese journal of surgery]·2014

Same author

The health effects of exposure to arsenic-contaminated drinking water: a review by global geographical distribution.

International journal of environmental health research·2014

Search research articles

Related Experiment Video

Updated: May 7, 2026

Bringing the Visible Universe into Focus with Robo-AO

Bringing the Visible Universe into Focus with Robo-AO

Published on: February 12, 2013

Orientation dependent wavefront correction system under grazing incidence.

Xingkun Ma, Lei Huang, Mali Gong

|October 10, 2013

Summary

This summary is machine-generated.

A novel wavefront correction method uses a laser beam

More Related Videos

$Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter$

Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter

Published on: September 16, 2025

$Author Spotlight: Advancements in Refractive Surgical Correction for Presbyopia and Exploring Postoperative Visual Acuity$

Author Spotlight: Advancements in Refractive Surgical Correction for Presbyopia and Exploring Postoperative Visual Acuity

Published on: September 20, 2024

Related Experiment Videos

Last Updated: May 7, 2026

Bringing the Visible Universe into Focus with Robo-AO

Bringing the Visible Universe into Focus with Robo-AO

Published on: February 12, 2013

$Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter$

Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter

Published on: September 16, 2025

$Author Spotlight: Advancements in Refractive Surgical Correction for Presbyopia and Exploring Postoperative Visual Acuity$

Author Spotlight: Advancements in Refractive Surgical Correction for Presbyopia and Exploring Postoperative Visual Acuity

Published on: September 20, 2024

Area of Science:

Optical Engineering
Laser Physics

Background:

Wavefront aberrations limit the performance of optical systems.
Traditional wavefront correction methods often require complex and bulky components.

Purpose of the Study:

To introduce a novel, compact method for wavefront correction.
To compensate for orientation-dependent aberrations using grazing incidence reflections.

Main Methods:

Utilized the stretching effect of a grazing incident laser beam.
Employed two orthogonal reflections on deformable mirrors.
No additional beam-expanding optics were required.

Main Results:

Achieved satisfying wavefront aberration correction.
The stretching effect expanded the beam size, enabling more actuators to participate.
Orientation-dependent aberrations were effectively compensated.
Fitting coefficients for the first 30 Zernike polynomials were controlled within 5%.

Conclusions:

The proposed method offers an effective and simple solution for wavefront correction.
This technique is particularly beneficial for systems requiring compact designs and compensation of complex aberrations.