Ключевые слова: alarm, alert, atom, atom icon, atomic, atomic energy, atomic symbol, background, black, bomb, caution, chemical plant, chemistry, contaminated, danger, dangerous, design, disaster, element, energy, environment, explosion, graphic, hazard, hazardous, icon, illustration, industry, irradiation, isolated, nuclear, nuclear explosion, physics, pollution, power, radiation, radioactive, radioactive symbol, radioactivity, reaction, reactor, risk, safety, science, sign, symbol, technology, toxic, vector, warning,