About Acoustic and Electromagnetic Radiation of the Charged Droplet

Theoretical methods of classical mathematical physics investigate the acoustic and electromagnetic radiation generated by capillary oscillations of a charged drop of an ideal uncompressible electroconductive fluid in an ideal nonconductive medium. The radiations discussed are found in first-order analytical asymptotic calculations of smallness by the dimensionless amplitude of droplet oscillations. Analytical expressions were found for the intensity of acoustic and electromagnetic radiation, which differ by several orders of magnitude and fall on different frequency bands. Acoustic radiation from liquid-droplet systems of natural origin: fogs, clouds, smogs – falls on the ultrasonic frequency range, but acoustic radiation from large raindrops goes in the area of audible sound. Electromagnetic radiation from liquid-droplet systems of natural origin goes at frequencies from tenths of megahertz to megahertz units.