Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Gas Chromatography: Types of Detectors-II

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...

Flame Photometry: Overview

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...

Flame Photometry: Lab

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...

You might also read

Related Articles

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

Sort by

Same author

Chemistry and lung toxicity of particulate matter emitted from firearms.

Scientific reports·2022

Same author

Invited Article: Quantitative imaging of explosions with high-speed cameras.

The Review of scientific instruments·2016

Same author

High-speed two-camera imaging pyrometer for mapping fireball temperatures.

Applied optics·2011

Same author

Acetylene measurement in flames by chirp-based quantum cascade laser spectrometry.

Applied optics·2009

Same author

Differential schlieren-interferometry with a simple adjustable Wollaston-like prism.

Applied optics·2008

Same author

Temporal evolution of the laser-induced breakdown spectroscopy spectrum of aluminum metal in different bath gases.

Applied optics·2005

Search research articles

Related Experiment Video

Updated: Jun 1, 2026

High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings

High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings

Published on: April 16, 2017

High-speed digital color imaging pyrometry.

John M Densmore¹, Matthew M Biss, Kevin L McNesby

¹United States Army Research Laboratory, Aberdeen Proving Ground, Maryland 21005, USA. john.m.densmore@us.army.mil

|June 16, 2011

Summary

High-speed color cameras can now measure temperatures of explosions. This new method uses a two-color ratio technique to analyze fireball temperatures, reaching approximately 1980 K after detonation.

More Related Videos

High-speed Particle Image Velocimetry Near Surfaces

High-speed Particle Image Velocimetry Near Surfaces

Published on: June 24, 2013

Dual-mode Imaging of Cutaneous Tissue Oxygenation and Vascular Function

Dual-mode Imaging of Cutaneous Tissue Oxygenation and Vascular Function

Published on: December 8, 2010

Related Experiment Videos

Last Updated: Jun 1, 2026

High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings

High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings

Published on: April 16, 2017

High-speed Particle Image Velocimetry Near Surfaces

High-speed Particle Image Velocimetry Near Surfaces

Published on: June 24, 2013

Dual-mode Imaging of Cutaneous Tissue Oxygenation and Vascular Function

Dual-mode Imaging of Cutaneous Tissue Oxygenation and Vascular Function

Published on: December 8, 2010

Area of Science:

Combustion Science
High-Speed Imaging
Thermometry

Background:

Measuring temperatures during high-explosive and combustion events is challenging due to event speed and harsh environments.
Existing methods may be limited by the dynamic and extreme conditions inherent in these processes.

Purpose of the Study:

To characterize and calibrate a digital high-speed color camera for accurate temperature measurements of energetic events.
To evaluate the impact of image processing transformations on temperature calculation accuracy.

Main Methods:

Utilized a two-color ratio method with a graybody assumption on color filter array raw image data.
Analyzed the effects of demosaicing, white balance, and gamma correction on temperature calculations.
Employed a Phantom color camera for experimental measurements.

Main Results:

Successfully measured the surface temperature of exploded C-4 charges.
Observed a rapid temperature increase in the fireball post-detonation.
Determined a stable fireball surface temperature of approximately 1980 K.

Conclusions:

A calibrated high-speed color camera system provides a viable method for temperature measurement in explosive events.
The two-color ratio technique, even with processed images, can yield accurate temperature data.
The study demonstrates the feasibility of using digital imaging for pyrometry in extreme conditions.