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1. In 1933 two French scientists discovered of Sonoluminescence (SL) phenomenon, which first described in an article by two German physicists in 1935.
2. In 1960 Dr. Peter Jarman from the Imperial College of London, UK proposed the most reliable theory of SL phenomenon. The collapsing bubble generates an imploding shock wave that compresses and heats the gas in bubble to extremely high temperature.
3. In the early 1990s, Dr. Seth Putterman and colleagues at UCLA, US carried out more refined measurements of the light.  The wavelength of the light extended into the ultraviolet range, indicating that temperatures inside the bubble where at least 10,000 degrees C and possibly higher. The speed of the bubble's collapse was supersonic. 
4. In 1993 Dr. Alexander Kravtsov at Alfa Technology LLC, US discovery the SL Resonance effect in steam of processing water and developed the Alfa Technology.
5. In 1997 Dr. William Moss of the Lawrence Livermore National Laboratory, US theoretically studied the spherical implosion and show that a shock wave strengthens      as it nears the bubble's center, where the heating has a maximum. The atoms and molecules that make up the gas begins to ionize or break down, forming plasma. The hot gas emits light through a torrential cascade of energy, thereby creating light pulses.
6. In 1998 Dr. Thomas Matula at the Applied Physics Laboratory, US showed that SL might have practical applications, embedded in a new discipline called Sonochemistry. 
7. In 2001 Dr. Inez Hua at Purdue University, US studied the ultrasound cavitation resonance effect and show that SL could be used in waste remediation - the destruction of toxic chemicals that are the products of industrial processes or agricultural runoff. In 2002 Dr. A. Kladov at Roslo Lab, Russia discovery that the huge amount of energy delivered by the collapsing bubbles is high enough for transmutation of any kind of toxic waste into water.      


 
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