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

Flame Photometry: Overview01:02

Flame Photometry: Overview

Flame photometry, also known as flame emission spectrometry, is a technique used for the qualitative and quantitative analysis of elements present in a sample using a flame as the source of excitation energy. The concept of flame photometry was realized in the early 1860s by Kirchhoff and Bunsen, who discovered that specific elements emit characteristic radiation when excited in flames. The first instrument developed for this purpose was used to measure sodium (Na) in plant ash using a Bunsen...
Gas Chromatography: Types of Detectors-II01:19

Gas Chromatography: Types of Detectors-II

In gas chromatography, different detectors are employed to meet specific analytical needs. These detectors are often categorized based on their detection mechanisms and the types of compounds they are best suited to analyze. Thermal Conductivity Detectors (TCD), Flame Ionization Detectors (FID), and Electron Capture Detectors (ECD) represent common categories, each with unique operating principles and applications. However, beyond these, several other detectors are designed for more specialized...
Determination of Crystal Structures01:29

Determination of Crystal Structures

In the late 1800s, the revelation that light extended beyond visible wavelengths led to the discovery of X-rays by Wilhelm Roentgen. Recognized as high-energy electromagnetic radiation with short wavelengths, X-rays prompted exploration into their interaction with crystals. Max von Laue proposed in 1912 that the periodic arrangement of atoms, ions, or molecules in crystals would cause them to diffract X-rays, a hypothesis confirmed through experiments with copper sulfate and zinc sulfide...
Flame Photometry: Lab01:16

Flame Photometry: Lab

In a flame photometer, when a solution like potassium chloride is aspirated into the flame, the solvent evaporates, leaving behind dehydrated salt. This salt dissociates into free gaseous atoms in their ground state. Some of these atoms absorb energy from the flame, leading to their excitation. The excited atoms return to the ground state, emitting photons at characteristic wavelengths. Because only electronic transitions are involved, the resulting emission lines are very narrow. The intensity...
Photoelectric Effect02:26

Photoelectric Effect

When light of a particular wavelength strikes a metal surface, electrons are emitted. This is called the photoelectric effect. The minimum frequency of light that can cause such emission of electrons is called the threshold frequency, which is specific to the metal. Light with a frequency lower than the threshold frequency, even if it is of high intensity, cannot initiate the emission of electrons. However, when the frequency is higher than the threshold value, the number of electrons ejected...
Atomic Emission Spectroscopy: Lab01:29

Atomic Emission Spectroscopy: Lab

AES is a powerful analytical technique, especially effective when used with plasma sources, producing abundant spectra in characteristic emission lines. The Inductively Coupled Plasma (ICP), in particular, yields superior quantitative analytical data due to its high stability, low noise, low background, and minimal interferences under optimal experimental conditions. However, newer air-operated microwave sources are emerging as promising alternatives that could be more cost-effective than...

You might also read

Related Articles

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

Sort by
Same author

A case-control study on QEEG as a marker of cognition in depression.

Indian journal of psychiatry·2025
Same author

Complications Encountered with ETV in Infants with Congenital Hydrocephalus.

Neurology India·2022
Same author

Polymorphisms in vitamin D receptor, toll-like receptor 2 and Toll-Like receptor 4 genes links with Dengue susceptibility.

Bioinformation·2021
Same author

Expeditious quest for the best vaccine: the game is on.

QJM : monthly journal of the Association of Physicians·2021
Same author

Cardiovascular complications and its relationship with functional outcomes in Guillain-Barré syndrome.

QJM : monthly journal of the Association of Physicians·2019
Same author

Prevalence of afebrile malaria and development of risk-scores for gradation of villages: A study from a hot-spot in Odisha.

PloS one·2019
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 13, 2026

Laser-heating and Radiance Spectrometry for the Study of Nuclear Materials in Conditions Simulating a Nuclear Power Plant Accident
09:18

Laser-heating and Radiance Spectrometry for the Study of Nuclear Materials in Conditions Simulating a Nuclear Power Plant Accident

Published on: December 14, 2017

Pyroelectric null detector for absolute radiometry.

M M Pradhan, R K Garg

    Applied Optics
    |April 20, 2010
    PubMed
    Summary
    This summary is machine-generated.

    A novel pyroelectric null detector (PND) precisely measures radiation by balancing absorbed power with electric heating pulses. This innovation enables accurate, absolute radiation measurements for scientific applications.

    More Related Videos

    The Frequency Domain Thermoreflectance Technique for Thermal Property Measurements
    09:10

    The Frequency Domain Thermoreflectance Technique for Thermal Property Measurements

    Published on: December 5, 2025

    Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing
    10:42

    Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing

    Published on: March 22, 2019

    Related Experiment Videos

    Last Updated: Jun 13, 2026

    Laser-heating and Radiance Spectrometry for the Study of Nuclear Materials in Conditions Simulating a Nuclear Power Plant Accident
    09:18

    Laser-heating and Radiance Spectrometry for the Study of Nuclear Materials in Conditions Simulating a Nuclear Power Plant Accident

    Published on: December 14, 2017

    The Frequency Domain Thermoreflectance Technique for Thermal Property Measurements
    09:10

    The Frequency Domain Thermoreflectance Technique for Thermal Property Measurements

    Published on: December 5, 2025

    Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing
    10:42

    Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing

    Published on: March 22, 2019

    Area of Science:

    • Physics
    • Materials Science
    • Instrumentation

    Background:

    • Pyroelectric detectors are sensitive to temperature changes caused by absorbed radiation.
    • Accurate measurement of radiation power is crucial in various scientific and industrial fields.
    • Existing methods may have limitations in absolute calibration and precision.

    Purpose of the Study:

    • To design and demonstrate a pyroelectric null detector (PND) for absolute radiation measurement.
    • To achieve a null output by balancing radiation power with electrical heating power.
    • To validate the PND's capability for precise radiation quantification.

    Main Methods:

    • Fabrication of a pyroelectric detector with two joined crystal plates exhibiting reversed domain polarity.
    • Utilizing the front electrode for radiation absorption and the back electrode for electrical heating.
    • Employing a photodiode signal to generate in-phase electric heating pulses via a heater amplifier.
    • Establishing a null output condition where radiation power equals electric heating power.

    Main Results:

    • The pyroelectric null detector (PND) successfully achieved a null output.
    • The null condition indicates precise equality between absorbed radiation power and applied electric heating power.
    • The PND demonstrated its efficacy for absolute measurement of radiation.

    Conclusions:

    • The designed pyroelectric null detector offers a robust method for absolute radiation measurement.
    • The null-balancing technique provides high accuracy and reliability.
    • This PND technology has significant potential for applications requiring precise radiation quantification.