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

Detection of Gross Error: The Q Test01:00

Detection of Gross Error: The Q Test

When one or more data points appear far from the rest of the data, there is a need to determine whether they are outliers and whether they should be eliminated from the data set to ensure an accurate representation of the measured value. In many cases, outliers arise from gross errors (or human errors) and do not accurately reflect the underlying phenomenon. In some cases, however, these apparent outliers reflect true phenomenological differences. In these cases, we can use statistical methods...
Quantifying and Rejecting Outliers: The Grubbs Test01:02

Quantifying and Rejecting Outliers: The Grubbs Test

Sometimes, a data set can have a recorded numerical observation that greatly  deviates from the rest of the data. Assuming that the data is normally distributed, a statistical method called the Grubbs test can be used to determine whether the observation is truly an outlier.  To perform a two-tailed Grubbs test, first, calculate the absolute difference between the outlier and the mean. Then, calculate the ratio between this difference and the standard deviation of the sample. This number is...
Testing a Claim about Standard Deviation01:19

Testing a Claim about Standard Deviation

A complete procedure to test a claim about population standard deviation or population variance is explained here.
The hypothesis testing for the claim of population standard deviation (or variance) requires the data and samples to be random and unbiased. The population distribution also must be normal. There is no specific requirement on the sample size as the estimation is based on the chi-square distribution.
As a first step, the hypothesis (null and alternative) concerning the claim about...
Behrens–Fisher Test00:57

Behrens–Fisher Test

The Behrens-Fisher test is a statistical method designed to address the Behrens-Fisher problem, which arises when comparing the means of two normally distributed populations with unequal variances. Unlike the Student's t-test, which assumes equal variances, the Behrens-Fisher test allows for mean comparison without this restrictive assumption. This flexibility makes it particularly valuable in scenarios where two independent samples exhibit normality but lack variance homogeneity.
This test is...
Errors In Hypothesis Tests01:14

Errors In Hypothesis Tests

When performing a hypothesis test, there are four possible outcomes depending on the actual truth (or falseness) of the null hypothesis and the decision to reject or not.
Modified Boxplots00:57

Modified Boxplots

A standard box and whisker plot informs us about the spread of the data in a given sample. One can identify the minimum value, maximum value, first quartile value, second quartile or median value, and third quartile.
However, the box plot does not tell the reader about outliers - values that lie far from the center of the data. We can modify the standard box and whisker plot to identify the outliers and visualize the actual spread of the data in a sample.
Initially, we calculate the adjusted...

You might also read

Related Articles

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

Sort by
Same author

Proliferative Optic Neuropathy in Horses.

Veterinary pathology·2018
Same author

Population inversion between I((2)P(1/2)) and I((2)P(3/2)) of atomic iodine generated by the energy transfer from NCl(a(1)Delta) to I((2)P(3/2)).

Optics letters·2009
Same author

Near-resonant holography.

Optics letters·2009
Same author

Direct Measurement of O(2)(a(1)D) and O(2)(X(3)?) in Chemical Oxygen-Iodine Lasers with use of Spontaneous Raman Imaging.

Applied optics·2008
Same author

Measurement of the Raman cross section of O(2)(a(1)D(g)).

Optics letters·2008
Same author

Subchronic and chronic inhalation toxicity of antimony trioxide in the rat.

Fundamental and applied toxicology : official journal of the Society of Toxicology·1994
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 15, 2026

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
12:14

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

Published on: August 12, 2013

Null testing in a modified scatterplate interferometer.

L F Rubin

    Applied Optics
    |March 12, 2010
    PubMed
    Summary
    This summary is machine-generated.

    This study demonstrates how a scatterplate interferometer can cancel test aberrations for optical testing. Fabrication techniques are similar to holographic interferometry, enabling precise null tests of parabolic mirrors.

    More Related Videos

    Experimental and Data Analysis Workflow for Soft Matter Nanoindentation
    13:04

    Experimental and Data Analysis Workflow for Soft Matter Nanoindentation

    Published on: January 18, 2022

    Scattering And Absorption of Light in Planetary Regoliths
    11:34

    Scattering And Absorption of Light in Planetary Regoliths

    Published on: July 1, 2019

    Related Experiment Videos

    Last Updated: Jun 15, 2026

    The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
    12:14

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

    Published on: August 12, 2013

    Experimental and Data Analysis Workflow for Soft Matter Nanoindentation
    13:04

    Experimental and Data Analysis Workflow for Soft Matter Nanoindentation

    Published on: January 18, 2022

    Scattering And Absorption of Light in Planetary Regoliths
    11:34

    Scattering And Absorption of Light in Planetary Regoliths

    Published on: July 1, 2019

    Area of Science:

    • Optical Engineering
    • Interferometry
    • Metrology

    Background:

    • Optical testing relies on precise aberration measurement.
    • Noncommon path interferometers offer advantages in certain applications.
    • Scatterplate interferometry is a technique for optical surface analysis.

    Purpose of the Study:

    • To demonstrate the use of a scatterplate interferometer in a noncommon path mode.
    • To show that test aberrations can be canceled using this method.
    • To describe the fabrication of scatterplates and their application in a null test.

    Main Methods:

    • Utilizing a scatterplate interferometer in a noncommon path configuration.
    • Employing fabrication techniques analogous to holographic interferometry.
    • Performing a null test on a 20-cm diameter, f/3 parabolic mirror.

    Main Results:

    • Successful cancellation of test aberrations was achieved.
    • The scatterplate fabrication process is compatible with established holographic methods.
    • A null test of a specific parabolic optic was successfully executed.

    Conclusions:

    • Scatterplate interferometers in noncommon path mode are effective for aberration cancellation.
    • The fabrication process is practical and leverages existing holographic techniques.
    • This method provides a viable approach for the null testing of parabolic optics.