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

Geometry of Hyperbolas01:30

Geometry of Hyperbolas

A hyperbola consists of all points where the absolute difference of distances to two fixed points, called foci, remains constant. The standard equation isEach branch extends infinitely and approaches two asymptotes, which guide the curve’s behavior. The parameters a and b define key features: a measures the distance from the center to each vertex along the transverse axis, while b influences the slopes of the asymptotes. The asymptotes have equationsA rectangle centered at the origin with...
Phase Contrast and Differential Interference Contrast Microscopy01:26

Phase Contrast and Differential Interference Contrast Microscopy

Phase-Contrast Microscopes
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...
Mohr's Circle for Plane Strain01:18

Mohr's Circle for Plane Strain

Mohr's circle is a crucial graphical method used to analyze plane strain by plotting strain on a set of cartesian coordinates, where the abscissa is normal strain ∈ and the ordinate is shear strain γ. Similarly to Mohr’s circle for plane stress, two points X and Y are plotted. Their coordinates are (∈x, -γXY) and (∈Y, γXY), respectively.
Mohr's circle visually represents the strain states under various conditions, which is essential for understanding material behavior. The center of Mohr's...
Steady, Laminar Flow Between Parallel Plates01:17

Steady, Laminar Flow Between Parallel Plates

Understanding steady, laminar flow between parallel plates is essential for analyzing and designing flow in narrow rectangular channels, commonly found in various water conveyance and drainage systems. The Navier-Stokes equations govern fluid motion and are generally challenging to solve due to their nonlinearity. However, simplifications are possible in certain cases, like the steady laminar flow between parallel plates. For this scenario, we assume steady, incompressible, laminar flow.
Focusing of Light in the Eye01:16

Focusing of Light in the Eye

Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...
Mohr's Circle for Plane Stress01:23

Mohr's Circle for Plane Stress

Mohr's circle is a graphical method for identifying the state of stress at a point in a material, making it easier to analyze stress transformations under plane stress conditions. This two-dimensional technique visualizes both normal and shearing stresses on an element.
Consider a set of Cartesian coordinates. The horizontal and vertical axes correspond to normal stress (σ) and shearing stress (τ), respectively. Two points, points A and B, are defined by the normal and shear stresses on the...

You might also read

Related Articles

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

Sort by
Same author

Cushing disease caused by ectopic sphenoid pituitary macroadenoma: a major interdisciplinary challenge in everyday clinical practice.

Polish archives of internal medicine·2026
Same author

Real-time converter of intermittent-scanned glucose sensors to continuous glucose monitors with potential future applications for insulin delivery.

HardwareX·2025
Same author

Baseline cross-sectional imaging of locally advanced high-risk breast cancer facilitates highly customized radiation therapy in surgically inaccessible anatomical areas.

Frontiers in oncology·2025
Same author

Subwavelength Imaging in Sub-THz Range Using Dielectric Waveguide.

Sensors (Basel, Switzerland)·2025
Same author

Nocturnal camouflage through background matching against moonlight.

Proceedings of the National Academy of Sciences of the United States of America·2024
Same author

Use of the perceptual point-spread function to assess dysphotopsias.

PloS one·2024

Related Experiment Video

Updated: Jun 22, 2026

Micro/Nano-scale Strain Distribution Measurement from Sampling Moiré Fringes
06:56

Micro/Nano-scale Strain Distribution Measurement from Sampling Moiré Fringes

Published on: May 23, 2017

Equilateral hyperbolic moiré zone plates with variable focus obtained by rotations.

Zbigniew Jaroszewicz, Andrzej Kołodziejczyk, Alejandro Mira

    Optics Express
    |June 5, 2009
    PubMed
    Summary

    We developed novel moiré zone plates with adjustable focal lengths. These hyperbolic zone plates offer constant aperture, aberration control, and high diffraction efficiency, useful for alignment techniques.

    More Related Videos

    Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms
    08:48

    Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms

    Published on: September 25, 2020

    Digital Inline Holographic Microscopy (DIHM) of Weakly-scattering Subjects
    10:16

    Digital Inline Holographic Microscopy (DIHM) of Weakly-scattering Subjects

    Published on: February 8, 2014

    Related Experiment Videos

    Last Updated: Jun 22, 2026

    Micro/Nano-scale Strain Distribution Measurement from Sampling Moiré Fringes
    06:56

    Micro/Nano-scale Strain Distribution Measurement from Sampling Moiré Fringes

    Published on: May 23, 2017

    Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms
    08:48

    Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms

    Published on: September 25, 2020

    Digital Inline Holographic Microscopy (DIHM) of Weakly-scattering Subjects
    10:16

    Digital Inline Holographic Microscopy (DIHM) of Weakly-scattering Subjects

    Published on: February 8, 2014

    Area of Science:

    • Optics and Photonics
    • Diffractive Optics
    • Metamaterials

    Background:

    • Zone plates are diffractive optical elements used for focusing light.
    • Traditional zone plates have limitations in focal length tunability and aberration control.
    • Moiré patterns offer a novel approach to creating complex optical structures.

    Purpose of the Study:

    • To introduce equilateral hyperbolic moiré zone plates with variable focal length.
    • To investigate the advantages of moiré zone plates over conventional designs.
    • To explore potential applications in optical alignment and metrology.

    Main Methods:

    • Formation of moiré patterns by rotating two identical basic grids (principal zone plates).
    • Utilizing various principal zone plates as basic transmittances, excluding spherical ones.
    • Introducing radial carrier frequency for enhanced moiré fringe clarity.
    • Implementing a constant phase shift for destructive interference in the focal cross.

    Main Results:

    • Achieved variable focal length in hyperbolic zone plates.
    • Demonstrated a constant aperture during grid movement.
    • Showcased aberration suppression against lateral displacements.
    • Attained high diffraction efficiency in binary phase versions.
    • Successfully controlled interference patterns within the focal cross.

    Conclusions:

    • Moiré zone plates offer significant advantages in optical element design.
    • The proposed hyperbolic moiré zone plates are versatile and efficient.
    • These elements show high potential for applications like three-point alignment techniques.