1. Anatomy: Da Vinci was fascinated by the human body and conducted extensive anatomical dissections. His notebooks contain detailed drawings of muscles, bones, and organs, often with notes on their function and structure. He was particularly interested in the workings of the heart and circulatory system.
2. Optics: Da Vinci investigated the principles of light and vision. He studied the anatomy of the eye, experimented with mirrors and lenses, and even attempted to create a camera obscura (a precursor to the modern camera). His notebooks contain sketches of optical illusions and reflections, demonstrating his understanding of how light behaves.
3. Hydraulics and Mechanics: Da Vinci was a keen observer of the natural world and applied his knowledge to engineering problems. His notebooks contain detailed drawings of machines, such as pumps, gears, and flying machines. He also explored the principles of buoyancy and fluid dynamics, experimenting with water flow and the design of canals.
4. Geometry and Proportion: Da Vinci was a master of geometry and used it to analyze and recreate the beauty of the natural world. He believed that the universe was governed by mathematical principles and applied these principles to his art and scientific studies. His notebooks contain diagrams and notes on geometric shapes, perspective, and the golden ratio.
