Related Experiment Video
Updated: Oct 1, 2026

Activating Molecules, Ions, and Solid Particles with Acoustic Cavitation
Published on: April 11, 2014
Blackbody spectra for sonoluminescing hydrogen bubbles
George Vazquez1, C Camara, S J Putterman
1Physics Department, University of California, Los Angeles, California 90095, USA.
Abstract:
The dynamical motion of sonoluminescing bubbles formed from a mixture of water and hydrogen gas indicates that these bubbles contain hydrogen. Their spectrum is well matched by an ideal 6000 K blackbody radiating from a surface with a radius less than 1/4 microm. According to this model, the state of matter inside the collapsed bubble is so stressed that the photon mean free path is much smaller than 1 microm. Implications for various theories of the light-emitting mechanism and the role of chemical reactions are discussed.
More Related Videos
Related Concept Videos
Emission Spectra
UV–Vis Spectrometers
Atomic Absorption Spectroscopy: Radiation and Light Sources
Two common narrow-range 'line' sources used in AAS are hollow-cathode lamps (HCLs) and...
UV–Vis Spectrum
The UV–Vis spectrum of a molecule is the plot of its absorbance versus wavelength. The plot is drawn by taking molar absorptivity (ε) or log ε on the y-axis (ordinate)...
Flame Photometry: Lab
UV–Vis Spectroscopy: Beer–Lambert Law

