Gaetano Vacca was born in Bari on December 5,1949. He graduated on July 27, 1974 in Mechanical Engineering at the University of Bari with a grade of 110/110; in 1976 he obtained a fellowship by the Aerospace Engineering Department of the University of Cincinnati, OHIO-USA, and on September of the same year he moved to Cincinnati to attend the MS degree courses of Aerospace Engineering at that Department where on December 16, 1977 he got his Master of Science, with high honor. In 1990 he became Professor of Machinery at the University of Basilicata, Italy. In 2001 he has been called to take the position of professor of Mechanical and Thermal Measurements at the Polytechnic of Bari University, where he is still working at the DMMM Department. Since 1978 he has been teaching several courses on "Numerical Analysis", "Computational Fluid-dynamics", “Probability and Statistics”, "Machinery", Gas- dynamics, at the University of Bari first, and then at the University of Basilicata, Italy. From 1976 until 1992 he spent some periods in the USA to study first, and then as visiting scientist at Virginia Tec. Currently, his activity of research is focused on the applications of laser technology to fluid-dynamic measurements and mechanical vibrations. Other his scientific interests are in controlling and monitoring machines and plants, biomedical measurements and applications, measurement uncertainty analysis. He is the author of over 100 papers, mostly international.