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

Photoluminescence: Fluorescence and Phosphorescence01:23

Photoluminescence: Fluorescence and Phosphorescence

2.2K
Photoluminescence is a process where a molecule absorbs light energy and re-emits it in the form of light. This phenomenon occurs when a substance absorbs photons, promoting its electrons to higher energy level excited states, followed by a relaxation process in which the electrons return to their original ground state energy levels and emit light. Photoluminescence is widely observed in various materials, including semiconductors, and organic and inorganic compounds.
A pair of electrons in a...
2.2K
Variables Affecting Phosphorescence and Fluorescence01:26

Variables Affecting Phosphorescence and Fluorescence

576
Fluorescence and phosphorescence are essential phenomena in fields like analytical chemistry, biological imaging, and materials science, where they detect molecular properties and visualize cellular structures. Understanding the variables that influence these luminescent behaviors is crucial for maximizing accuracy and efficiency in their applications. These variables can broadly be grouped into chemical structure, solvent properties, and external conditions, each playing a distinct role in...
576
Photoreceptors and Visual Pathways01:22

Photoreceptors and Visual Pathways

6.3K
At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category,...
6.3K
Fluorescence and Phosphorescence: Instrumentation01:25

Fluorescence and Phosphorescence: Instrumentation

699
Fluorometers and spectrofluorometers are two types of instruments used for measuring molecular fluorescence. These instruments differ in how they select excitation and emission wavelengths and the type of light sources they utilize. Fluorometers use absorption interference filters to choose excitation and emission wavelengths. The excitation source in a fluorometer is typically a low-pressure mercury vapor lamp that emits intense lines distributed throughout the ultraviolet and visible regions.
699
Flame Photometry: Overview01:02

Flame Photometry: Overview

742
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...
742
Interaction of EM Radiation with Matter: Spectroscopy01:12

Interaction of EM Radiation with Matter: Spectroscopy

1.9K
Electromagnetic (EM) radiation can be considered an oscillating electric and magnetic field propagating through a medium that can interact with matter in its path. The electric field in the radiation can interact with electrical charges in the atoms or molecules in the matter. On the other hand, the magnetic field can interact with the magnetic field in the atomic nucleus. The study of the interaction between electromagnetic radiation and matter is termed spectroscopy. Spectroscopy is the study...
1.9K

You might also read

Related Articles

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

Sort by
Same author

Highly dynamic gamma-ray emissions are common in tropical thunderclouds.

Nature·2024
Same author

Flickering gamma-ray flashes, the missing link between gamma glows and TGFs.

Nature·2024
Same author

Polarity transitions of narrow bipolar events in thundercloud tops reaching the lower stratosphere.

Nature communications·2024
Same author

Global Distribution of Key Features of Streamer Corona Discharges in Thunderclouds.

Journal of geophysical research. Atmospheres : JGR·2023
Same author

Optical observations of thunderstorms from the International Space Station: recent results and perspectives.

NPJ microgravity·2023
Same author

Multi-Pulse Corona Discharges in Thunderclouds Observed in Optical and Radio Bands.

Geophysical research letters·2022

Related Experiment Video

Updated: Aug 25, 2025

Method for Recording Broadband High Resolution Emission Spectra of Laboratory Lightning Arcs
07:51

Method for Recording Broadband High Resolution Emission Spectra of Laboratory Lightning Arcs

Published on: August 27, 2019

7.0K

The Temporal Relationship Between Terrestrial Gamma-Ray Flashes and Associated Optical Pulses From Lightning.

C A Skeie1, N Østgaard1, A Mezentsev1

  • 1Birkeland Centre for Space Science Institute of Physics and Technology University of Bergen Bergen Norway.

Journal of Geophysical Research. Atmospheres : JGR
|October 17, 2022
PubMed
Summary

Researchers analyzed 221 Terrestrial Gamma-ray Flashes (TGFs) and optical pulses using the ASIM instrument. They found TGF onsets precede optical pulses, with longer TGFs showing greater delays, suggesting distinct emission mechanisms.

Keywords:
ASIMatmospheric electricityhigh‐energy radiationlightninglightning dischargeterrestrial gamma‐ray flashes

More Related Videos

An Experimental Protocol for Femtosecond NIR/UV - XUV Pump-Probe Experiments with Free-Electron Lasers
09:49

An Experimental Protocol for Femtosecond NIR/UV - XUV Pump-Probe Experiments with Free-Electron Lasers

Published on: October 23, 2018

16.1K
Direct Imaging of Laser-driven Ultrafast Molecular Rotation
10:52

Direct Imaging of Laser-driven Ultrafast Molecular Rotation

Published on: February 4, 2017

9.8K

Related Experiment Videos

Last Updated: Aug 25, 2025

Method for Recording Broadband High Resolution Emission Spectra of Laboratory Lightning Arcs
07:51

Method for Recording Broadband High Resolution Emission Spectra of Laboratory Lightning Arcs

Published on: August 27, 2019

7.0K
An Experimental Protocol for Femtosecond NIR/UV - XUV Pump-Probe Experiments with Free-Electron Lasers
09:49

An Experimental Protocol for Femtosecond NIR/UV - XUV Pump-Probe Experiments with Free-Electron Lasers

Published on: October 23, 2018

16.1K
Direct Imaging of Laser-driven Ultrafast Molecular Rotation
10:52

Direct Imaging of Laser-driven Ultrafast Molecular Rotation

Published on: February 4, 2017

9.8K

Area of Science:

  • Atmospheric physics
  • Space science
  • High-energy astrophysics

Background:

  • Terrestrial Gamma-ray Flashes (TGFs) are brief, intense bursts of gamma rays originating from thunderstorms.
  • Understanding the relationship between TGFs and optical emissions is crucial for comprehending lightning processes.

Purpose of the Study:

  • To investigate the temporal relationship between TGFs and associated optical pulses observed by the ASIM instrument.
  • To categorize TGF events based on their duration and the delay between TGF and optical pulse onsets.

Main Methods:

  • Analysis of 221 TGF events detected by the Atmosphere-Space Interactions Monitor (ASIM) on the International Space Station.
  • Utilizing X- and gamma-ray energy detections, photometer data (180-230, 337, 777 nm), and optical camera data (337, 777 nm).
  • Cross-referencing TGF characteristics and lightning detections to determine event association and location relative to the ASIM photometer's field of view.

Main Results:

  • 72 out of 221 events showed clear association between TGFs and optical pulses within the photometer's field of view.
  • TGF onsets consistently occurred before or simultaneously with optical pulse onsets, accounting for cloud scattering effects.
  • A correlation was observed between longer TGF durations and increased delays in optical pulse onsets.
  • Two distinct event groups emerged: one with potential overlap between TGF and optical emissions, and another with significant delays unexplainable by cloud scattering.

Conclusions:

  • TGFs and associated optical emissions exhibit complex temporal relationships.
  • The observed delays and durations suggest at least two different mechanisms may be responsible for generating TGFs and their optical counterparts.
  • Further research is needed to fully elucidate the interplay between high-energy atmospheric phenomena and visible light emissions during thunderstorms.