Ключевые слова: art, background, black, blackboard, board, calculate, challenge, circle, dark, decision, discover, education, einstein, energy, equation, field, formula, green, illustration, integral, isolated, learn, light, math, mathematics, maxwell, modern, nuclear, pattern, performance, physics, pressure, relation, relativity, research, school, science, solution, speed, study, symbol, teach, teacher, technical, theory, time, velocity, voltage, wall,