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

1.6K
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...
1.6K
Atomic Fluorescence Spectroscopy01:29

Atomic Fluorescence Spectroscopy

252
Atomic fluorescence spectroscopy (AFS) is an analytical technique that involves the electronic transitions of atoms in a flame, furnace, or plasma being excited by electromagnetic (EM) radiation. When these atoms absorb energy, they become excited and subsequently release energy as they return to their original state. This emitted light, or "fluorescence," is observed at a right angle to the incident beam. Both absorption and emission processes transpire at distinct wavelengths, which...
252
Emission Spectra02:39

Emission Spectra

51.1K
When solids, liquids, or condensed gases are heated sufficiently, they radiate some of the excess energy as light. Photons produced in this manner have a range of energies, and thereby produce a continuous spectrum in which an unbroken series of wavelengths is present.
51.1K
Total Internal Reflection Fluorescence Microscopy01:05

Total Internal Reflection Fluorescence Microscopy

5.7K
Total internal reflection fluorescence microscopy or TIRF is an advanced microscopic technique used to visualize fluorophores in samples close to a solid surface with a higher refractive index, such as a glass coverslip. TIRF only allows fluorophores in proximity to the solid surface to be excited. When light from a medium with a lower refractive index (such as air) hits the glass coverslip at a critical angle, the light undergoes total internal reflection stead of passing through the glass.
5.7K
Reporter Genes02:11

Reporter Genes

11.3K
Reporter genes are a type of protein-coding gene that are often tagged to a gene of interest. Once inside a target cell, reporter genes usually produce visually identifiable characteristics like fluorescence and luminescence when expressed along with the gene of interest. Thus, reporter genes “report” the presence or absence of genes of interest in an organism, determine the gene expression pattern, or track the physical location of a DNA segment or protein in the cell.
11.3K

You might also read

Related Articles

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

Sort by
Same author

A 4-week community-implemented diabetes prevention program is associated with improved metabolic outcomes at 12 months after participation.

Diabetic medicine : a journal of the British Diabetic Association·2026
Same author

Transcranial photobiomodulation therapy with 808 nm and 1064 nm can affect different behavior parameters in dogs.

Lasers in medical science·2026
Same author

Use of artificial intelligence in analysis of endoscopic images to detect residual disease or regrowth in rectal patients with complete clinical response to neoadjuvant chemoradiotherapy.

Techniques in coloproctology·2026
Same author

Genetic variability and selection of natural populations of Campomanesia adamantium using REML/BLUP mixed models.

Brazilian journal of biology = Revista brasleira de biologia·2026
Same author

Climatic factors and Euplatypus parallelus populations in teak plantations in the Amazon biome.

Brazilian journal of biology = Revista brasleira de biologia·2026
Same author

Assessing ant diversity with bioindicators in a deactivated iron mine: implications for environmental monitoring and recovery efforts.

Brazilian journal of biology = Revista brasleira de biologia·2025

Related Experiment Video

Updated: Jun 11, 2025

Visualization of Low-Level Gamma Radiation Sources Using a Low-Cost, High-Sensitivity, Omnidirectional Compton Camera
06:28

Visualization of Low-Level Gamma Radiation Sources Using a Low-Cost, High-Sensitivity, Omnidirectional Compton Camera

Published on: January 30, 2020

12.5K

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

N Østgaard1, A Mezentsev2, M Marisaldi3,4

  • 1Department of Physics and Technology, University of Bergen, Bergen, Norway. Nikolai.Ostgaard@uib.no.

Nature
|October 2, 2024
PubMed
Summary

Researchers discovered flickering gamma-ray flashes (FGFs), a new phenomenon from thunderclouds. These events bridge the gap between gamma-ray glows and terrestrial gamma-ray flashes (TGFs).

More Related Videos

Engineering 'Golden' Fluorescence by Selective Pressure Incorporation of Non-canonical Amino Acids and Protein Analysis by Mass Spectrometry and Fluorescence
11:51

Engineering 'Golden' Fluorescence by Selective Pressure Incorporation of Non-canonical Amino Acids and Protein Analysis by Mass Spectrometry and Fluorescence

Published on: April 27, 2018

11.9K
Single Synapse Indicators of Glutamate Release and Uptake in Acute Brain Slices from Normal and Huntington Mice
08:27

Single Synapse Indicators of Glutamate Release and Uptake in Acute Brain Slices from Normal and Huntington Mice

Published on: March 11, 2020

6.2K

Related Experiment Videos

Last Updated: Jun 11, 2025

Visualization of Low-Level Gamma Radiation Sources Using a Low-Cost, High-Sensitivity, Omnidirectional Compton Camera
06:28

Visualization of Low-Level Gamma Radiation Sources Using a Low-Cost, High-Sensitivity, Omnidirectional Compton Camera

Published on: January 30, 2020

12.5K
Engineering 'Golden' Fluorescence by Selective Pressure Incorporation of Non-canonical Amino Acids and Protein Analysis by Mass Spectrometry and Fluorescence
11:51

Engineering 'Golden' Fluorescence by Selective Pressure Incorporation of Non-canonical Amino Acids and Protein Analysis by Mass Spectrometry and Fluorescence

Published on: April 27, 2018

11.9K
Single Synapse Indicators of Glutamate Release and Uptake in Acute Brain Slices from Normal and Huntington Mice
08:27

Single Synapse Indicators of Glutamate Release and Uptake in Acute Brain Slices from Normal and Huntington Mice

Published on: March 11, 2020

6.2K

Area of Science:

  • Atmospheric electricity
  • High-energy astrophysics
  • Thunderstorm phenomena

Background:

  • Thunderclouds produce terrestrial gamma-ray flashes (TGFs) and gamma-ray glows, both involving relativistic electrons.
  • TGFs are intense, short-duration events linked to lightning, while glows are longer and less intense.
  • The relationship between these two phenomena has been unclear.

Purpose of the Study:

  • To report the discovery and characteristics of a novel hard-radiation phenomenon: flickering gamma-ray flashes (FGFs).
  • To investigate the potential connection between gamma-ray glows and TGFs.

Main Methods:

  • Observation of unique hard-radiation events using specialized instruments.
  • Analysis of FGFs' duration, intensity, pulse structure, and associated radio/optical emissions.

Main Results:

  • FGFs exhibit characteristics intermediate between gamma-ray glows and TGFs, with durations of 20–250 ms.
  • Unlike TGFs, FGFs are radio and optically silent.
  • FGFs initiate as glows, then transition to an intense, flickering pulse mode.

Conclusions:

  • Flickering gamma-ray flashes represent a distinct phenomenon in atmospheric electricity.
  • FGFs may serve as the long-sought link connecting gamma-ray glows and terrestrial gamma-ray flashes.
  • This discovery addresses a significant gap in understanding thundercloud-generated radiation.