Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Yatenko Leonid (born 25 April 1954) is a Ukrainian physicist, professor, Doctor of Science, Director of The Institute of Physics of the National Academy of Science of Ukraine, corresponding member of the National Academy of Sciences of Ukraine. Leonid Yatsenko was born on April 25, 1954 in Stepanovka, Zhitomor Oblast in Ukraine (then - one of the republics of the USSR). In 1970 he entered Kiev National Taras Shevchenko University, Radio physics department.