Gray (unit) Gray (unit) The gray (symbol: Gy) is a derived unit of ionizing radiation dose in the International System of Units (SI). It is defined as the absorption of one joule of radiation energy per kilogram of matter. It is used as a unit of the radiation quantity absorbed dose which measures the energy deposited in a unit mass at a certain position, and of the radiation quantity kerma, which is the amount of energy that is transferred from photons to electrons per unit mass at a certain position. The corresponding cgs unit to the gray is the rad (equivalent to
Scientific library of the Ukrainian Academy of Banking Scientific library of the Ukrainian Academy of Banking The scientific library of the Ukrainian Academy of Banking of the National Bank of Ukraine is a structural division of the State higher educational institution "the Ukrainian Academy of Banking of the National Bank of Ukraine" of the IV level of accreditation. It is located in the town Sumy. The scientific library of the Ukrainian Academy of Banking is a multifunctional educational, scientific, information and socio-cultural center with the modern equipment and the whole range of innovative technologies. It is a unique library for Ukraine. The new building of the scientific library