We have used the following sources to obtain information and inspiration for our experiment.

• B. R. Munson, T. H. Okiishi, 2012: Fundamentals of fluid mechanics, 7th edition,  John Wiley & Sons, Inc., 978-1-118-11613-5
• H. Medwin, J.A. Nystuen, P.W. Jacobus, L.H. Ostwald and D.E. Synder, 1992: The anatomy of underwater rain noise. J. Acoust. Soc. Am. 92, 1613–1623.
• Nasa Observatory; https://earthobservatory.nasa.gov/Features/Rain/rain_2.php