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
Ministry of Energy, Science & Technology and Public Utilities sustainable development of Belize." Key activities performed by the Energy Unit include data collection for the purpose of planning Belize's future energy supplies and calculating greenhouse gas emissions, public awareness on topics such as energy efficiency, as well as regulation and market reforms that promote a sustainable future for Belize. The Science and Technology Unit is responsible for the promotion of Science and Technology in Belize. The Unit plays a key role in Belize's efforts to achieve in the millennium development goals. The Unit conducts a number of activities that promote engagement with Science and Technology in Belize, including through