Ключевые слова: art, atom, background, banner, biology, board, chemical, chemistry, college, design, doodle, drawing, drawn, education, element, equipment, experiment, flask, glass, graphic, hand, icon, illustration, information, isolated, knowledge, lab, laboratory, medical, medicine, microscope, molecule, object, paper, physics, research, school, science, scientific, set, sign, sketch, student, study, symbol, technology, test, tube, white,