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

Attenuated Total Reflectance (ATR) Infrared Spectroscopy: Overview01:13

Attenuated Total Reflectance (ATR) Infrared Spectroscopy: Overview

Attenuated total reflectance (ATR) infrared spectroscopy is a powerful analytical technique used to study the composition of materials. It is widely employed in chemistry, materials science, forensic science, and other fields where sample characterization is required. ATR has several advantages over traditional transmission IR spectroscopy, including the requirement of little to no sample preparation and the ability to analyze a wide range of samples.
The ATR process begins by directing a beam...
Raman Spectroscopy Instrumentation: Overview01:26

Raman Spectroscopy Instrumentation: Overview

A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
IR Spectrometers01:25

IR Spectrometers

There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...
UV–Vis Spectrometers01:14

UV–Vis Spectrometers

The absorbance of UV and visible (UV–visible) radiations is measured using a UV–visible spectrophotometer. Deuterium lamps, which emit UV radiation, and tungsten lamps, which produce radiation in the visible region, are used as light sources in UV–visible spectrophotometers. A monochromator or prism is used for diffraction grating, i.e., to split the incoming radiation into different wavelengths. A system of slits is used to focus the desired wavelength on the sample cell. Samples for...

You might also read

Related Articles

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

Sort by
Same author

The relationship between psychological factors and pain in endometriosis.

Women's health (London, England)·2026
Same author

Extracting root fragments.

British dental journal·2024
Same author

Johnson Noise <i>Thermometry</i>.

Measurement science & technology·2024
Same author

The Boltzmann project.

Metrologia·2019
Same author

Cost-effectiveness of simulation-based team training in obstetric emergencies (TOSTI study).

European journal of obstetrics, gynecology, and reproductive biology·2017
Same author

Does the effect of one-day simulation team training in obstetric emergencies decline within one year? A post-hoc analysis of a multicentre cluster randomised controlled trial.

European journal of obstetrics, gynecology, and reproductive biology·2017

Related Experiment Video

Updated: Jul 7, 2026

A Stable Phantom Material for Optical and Acoustic Imaging
04:54

A Stable Phantom Material for Optical and Acoustic Imaging

Published on: June 16, 2023

Reflectometer for measuring the bidirectional reflectance of rough surfaces.

D R White, P Saunders, S J Bonsey

    Applied Optics
    |February 15, 2008
    PubMed
    Summary

    A new four-axis gonioreflectometer offers improved simplicity and cost-effectiveness. This automated instrument achieves high angular accuracy for precise optical measurements.

    More Related Videos

    Measuring Spatially- and Directionally-varying Light Scattering from Biological Material
    11:57

    Measuring Spatially- and Directionally-varying Light Scattering from Biological Material

    Published on: May 20, 2013

    Measurement of Carotenoids in Perifovea using the Macular Pigment Reflectometer
    09:35

    Measurement of Carotenoids in Perifovea using the Macular Pigment Reflectometer

    Published on: January 29, 2020

    Related Experiment Videos

    Last Updated: Jul 7, 2026

    A Stable Phantom Material for Optical and Acoustic Imaging
    04:54

    A Stable Phantom Material for Optical and Acoustic Imaging

    Published on: June 16, 2023

    Measuring Spatially- and Directionally-varying Light Scattering from Biological Material
    11:57

    Measuring Spatially- and Directionally-varying Light Scattering from Biological Material

    Published on: May 20, 2013

    Measurement of Carotenoids in Perifovea using the Macular Pigment Reflectometer
    09:35

    Measurement of Carotenoids in Perifovea using the Macular Pigment Reflectometer

    Published on: January 29, 2020

    Area of Science:

    • Optical Engineering
    • Instrumentation Science

    Background:

    • Gonioreflectometers are crucial for measuring optical properties.
    • Previous designs often involve complex mechanical systems.
    • Cost and simplicity are key considerations for instrument development.

    Purpose of the Study:

    • To describe a novel, fully automatic, four-axis gonioreflectometer.
    • To present a simpler and more cost-effective design compared to existing systems.
    • To detail the instrument's angular accuracy and range.

    Main Methods:

    • Utilized rotating arms instead of moving carriages for mounting optical components.
    • Incorporated commercially available components to reduce overall cost.
    • Developed and implemented an off-axis angular encoding scheme for precise measurement.

    Main Results:

    • Achieved an angular accuracy of 0.3 degrees.
    • Provided a measurement range of 90 degrees for both incident (theta(i)) and reflected (theta(r)) zenith angles.
    • Demonstrated a simpler mechanical design through the use of rotating arms.

    Conclusions:

    • The described gonioreflectometer offers a simpler, more cost-effective, and accurate solution for optical measurements.
    • The design innovations, including rotating arms and off-axis encoding, represent advancements in gonioreflectometer technology.
    • This instrument is suitable for applications requiring precise characterization of optical surfaces.