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

Van de Graaff Generator01:15

Van de Graaff Generator

Van de Graaff generators (or Van de Graaffs) are devices used to demonstrate high voltage due to static electricity that can also be used for research. Robert Van de Graaff first built one in 1931 (based on original suggestions by Lord Kelvin) for use in nuclear physics research.
Van de Graaff uses both smooth and pointed surfaces, conductors, and insulators to generate large static charges and, hence, large voltages. A substantial excess charge can be deposited on the sphere because it moves...
Generator Voltage Control01:21

Generator Voltage Control

Generator voltage control is crucial for maintaining the stable operation of synchronous generators and wind turbines. In older models, a DC generator driven by the rotor delivers DC power to the rotor's field winding, and the power is transferred through slip rings and brushes. In the latest models, static or brushless exciters are used. Static exciters rectify AC power from the generator terminals and then transfer the DC power directly to the rotor. Brushless exciters, on the other hand, use...
Electric Generator: Alternator01:25

Electric Generator: Alternator

Electric generators induce an emf by rotating a coil in a magnetic field. A simple alternator is an AC generator that creates electrical energy that varies sinusoidally with time. A simple alternator consists of a conducting loop that is placed inside a uniform magnetic field. The loop is connected to split rings connected to the external circuit with the help of brushes.
The magnetic flux passing through the coil varies sinusoidally as the loop rotates inside the magnetic field. This...
DC Generator01:19

DC Generator

An alternator converts mechanical energy into electrical energy that varies sinusoidally, resulting in AC current. Meanwhile, a DC generator converts mechanical energy into electrical energy, which are DC pulses with the same polarity. The construction of a DC generator is similar to that of an alternator, except that the pair of slip rings is replaced by a single split ring, also called a commutator. The commutator functions like a periodic rotary switch; it changes the contacts with the...
Generating Electromagnetic Radiations01:10

Generating Electromagnetic Radiations

The German physicist Heinrich Hertz (1857–1894) was the first to generate and detect certain types of electromagnetic waves in the laboratory. Starting in 1887, he performed a series of experiments that confirmed the existence of electromagnetic waves and verified that they travel at the speed of light. Hertz used an alternating-current RLC (resistor-inductor-capacitor) circuit that resonated at a known frequency and connected it to a loop of wire. High voltages induced across the gap in the...
Random Error01:04

Random Error

Random or indeterminate errors originate from various uncontrollable variables, such as variations in environmental conditions, instrument imperfections, or the inherent variability of the phenomena being measured. Usually, these errors cannot be predicted, estimated, or characterized because their direction and magnitude often vary in magnitude and direction even during consecutive measurements. As a result, they are difficult to eliminate. However, the aggregate effect of these errors can be...

You might also read

Related Articles

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

Sort by
Same author

Study of UV-bleached channel-waveguide performance in nonlinear optical polymer films.

Applied optics·2010
Same author

Distortionless eyepiece.

Applied optics·2010
Same author

Automatic wavefront error sensor.

Applied optics·2010
Same author

Comments on: Recent Advances in Astronomical Optics.

Applied optics·2010
Same author

Wide-field tilted-component telescope: a leonard extended yolo all-reflecting system.

Applied optics·2010
Same author

Proposed 131-cm f/3.5 Achromatic Schmidt Telescope.

Applied optics·2010
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: Jun 16, 2026

Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing
09:39

Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing

Published on: June 28, 2024

Aberration generator.

R A Buchroeder, R B Hooker

    Applied Optics
    |February 16, 2010
    PubMed
    Summary
    This summary is machine-generated.

    A novel aberration generator precisely introduces optical wavefront aberrations like defocus and coma. This tool aids in studying how aberrations impact image quality and optical transfer functions in diverse optical systems.

    Related Experiment Videos

    Last Updated: Jun 16, 2026

    Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing
    09:39

    Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing

    Published on: June 28, 2024

    Area of Science:

    • Optical engineering
    • Wavefront analysis
    • Image quality assessment

    Background:

    • Optical systems are susceptible to aberrations that degrade image quality.
    • Quantifying the impact of specific aberrations is crucial for system design and performance evaluation.
    • Existing methods for aberration control may lack precision or versatility.

    Purpose of the Study:

    • To introduce a new instrument, the aberration generator, for precise aberration control.
    • To enable the study of individual and combined optical aberrations.
    • To investigate the effects of aberrations on image quality and optical transfer functions.

    Main Methods:

    • Development of a novel aberration generator instrument.
    • Capability to introduce piston error, wavefront tilt, defocus, spherical aberration, coma, and astigmatism.
    • Generation of aberrations individually or in combination.

    Main Results:

    • The aberration generator successfully introduces precise amounts of various optical aberrations.
    • The instrument allows for controlled manipulation of wavefront errors.
    • Demonstrated ability to generate a comprehensive set of aberrations.

    Conclusions:

    • The aberration generator is a valuable tool for optical research.
    • Enables detailed analysis of aberration effects on optical system performance.
    • Facilitates advancements in optical design and image quality optimization.