Left-handed, he wrote in mirror images all his life. For left-handed writers, it is easier to pull the pen from right to left than to push it from left to right, and it will not confuse the words just written. Therefore, his diary is mirror image.
In science, Leonardo da Vinci is a meticulous observer, and he can express a phenomenon with very detailed descriptions. But it has not been verified by theory and experiment. Due to the lack of formal education in Latin and mathematics, most scholars in the same period did not pay attention to Leonardo da Vinci in the field of science. Leonardo da Vinci taught himself Latin. It is also said that Leonardo intended to publish a series of papers on various topics, but it has never been realized.
The rhombic octahedron painted by leonardo da vinci appeared in 1509 luca pacioli's Sacred Proportion.
Leonardo da vinci began to understand human anatomy while studying under verrocchio. At that time, verrocchio insisted that all his disciples study anatomy. When Leonardo da Vinci became a successful artist, he got permission to dissect the human body at Santa Maria Nuova Hospital in Florence. After that, he worked in Maggiore Hospital and Santo Spirito Hospital in Milan. In Rome; The first local hospital in Italy) homework. From 15 10 to 15 1 1, and Dr. Thor (Dr. Marcantonio della Torre; ; 148 1 year-1511year) * *. In 30 years, Leonardo da Vinci dissected 30 human bodies of different sexes and ages. During his cooperation with Dr. Thor, Leonardo da Vinci prepared to publish anatomical works and created more than 200 paintings.
But it was not until 1680 (dead 16 1) that his book was published in the name of On Painting. Besides the human body, Leonardo also dissected cows, birds, monkeys, bears and frogs for comparison of anatomical structures.
Leonardo da Vinci painted many figures of human bones and ilium, and he was also the first person to describe the double S shape of the spine in detail. He also studied the inclination of pelvis and sacrum, emphasizing that sacrum is not only a single shape, but also composed of five vertebrae. Leonardo da vinci can also show the skull shape and different cross-sectional views of the brain (cross section, longitudinal section and frontal section). He painted many pictures, including lungs, mesentery, urethra, sex organs and even sexual intercourse. He was the first person to draw a fetus in the womb (he wanted to know about the "fertility miracle") and the first person to draw an appendix in the abdominal cavity. In addition, Leonardo often described the muscles and tendons of the neck and shoulders. In 2005, leonardo da vinci's paintings inspired a British cardiac surgeon, who took the lead in developing a new method to repair the damaged heart.
He can be said to be a master of local anatomy. He not only excelled in studying human anatomy, but also dabbled in other animal anatomy. Leonardo da Vinci not only cared about body structure, but also cared about physiological function, which made him an anatomist and physiologist. He actively looks for people with obvious physical defects as models in order to draw funny pictures to highlight the significance of physiological functions. It is worth mentioning that Da Vinci can draw and write at the same time.
The research based on human anatomy also enabled Leonardo da Vinci to design the first robot in history. The design of this robot called Leonardo may have been completed in 1495, but it was not discovered until 1950. I don't know if this design should be made three-dimensional.