Ключевые слова: 3d fountain pen, academic illustrations, atomic models, biology and astronomy, detailed sketches, educational artwork, engineering concepts, fountain pen art, idea generation, infographic elements, knowledge sharing, laboratory notes, mathematical symbols, molecular structures, pen doodles, physics and chemistry, research and development, research scribbles, science doodles, science education, scientific breakthroughs, scientific diagrams, scientific drawings, scientific equations, scientific studies, scientific visualization, technical drawings, technological innovation, thought exploration,