Science and inventions of Leonardo da Vinci

Leonardo da Vinci (1452–1519) was an Italian polymath. He was very good at many different things and is often called a "Renaissance Man."

Everyone knows him for his famous paintings like the Mona Lisa and the Last Supper. But Leonardo was also very important in many areas of science and inventions. He studied and made discoveries in civil engineering, chemistry, geology, geometry, hydrodynamics, mathematics, mechanical engineering, optics, physics, pyrotechnics, and zoology.

Leonardo had many clever ideas that were ahead of his time. These included the parachute, the helicopter, a special vehicle for soldiers, and ships with two hulls. His drawings and studies helped people learn about the human body, stars, engineering, how light works, and the movement of water. One of his most famous drawings, the Vitruvian Man, shows how art and science connect in the human body.

Approach to scientific investigation

During the Renaissance, people believed that studying art and science could go together. Leonardo da Vinci was an artist, but his way of looking at the world through science helped him create great paintings.

Even though Leonardo did not study Latin, mathematics, or go to a university, he still did a lot of science. He watched nature closely and wrote down what he saw. He used his eyes more than any special tools to learn about the world.

Leonardo studied nature by looking at things in smaller parts, both with tools and in his mind, to understand how everything works. Some people think his way of mixing art with science was very special and different from other scientists who came after him.

Notes and journals

Leonardo kept many journals where he wrote almost every day. He also made notes and sheets with his ideas and plans. He wrote and drew with his left hand, so most of his writing is in mirror script, which looks backward and is hard to read. Many of his notes have survived and show his studies and inventions.

When Leonardo passed away, his writings were left to his student Francesco Melzi. Melzi wanted to publish a book called A Treatise on Painting using Leonardo’s work. Melzi collected papers, but many are now missing. The book was not published during Melzi’s life. Some of Leonardo’s works were published as A Treatise on Painting long after his death.

Publication

Leonardo helped his friend Luca Pacioli by drawing pictures for a book called De divina proportione. This book is about math in art. It came out in 1509. Leonardo was also working on a big book about his own ideas and inventions. He planned to put his ideas into different parts, and many of these ideas are in his notebooks.

His notes talk about many science topics, especially how they relate to art. Instead of doing experiments, Leonardo watched the world around him. He wrote about how light looks on things in nature, like leaves on trees.

He started writing his book in Florence on March 22, 1508. Leonardo said his book would not have a strict order, because he thought it would be hard to remember everything. He asked readers not to worry if he wrote about the same things more than once.

Natural science

Leonardo da Vinci was a talented artist who also studied many areas of science. He looked closely at how light works, which helped him create realistic paintings. He was especially interested in the human body and studied it to learn how muscles and bones work together.

Leonardo also studied animals, plants, and the Earth. He made detailed drawings of plants and landscapes, noticing how water shapes rocks and mountains. His observations showed his curiosity and desire to learn.

Mathematical studies

Leonardo da Vinci studied how to make flat things look 3D and 3D things look flat. This is called linear perspective. He used this skill in his early paintings, like the two Annunciations. He also worked on a special art trick called anamorphosis, where pictures look strange unless you view them from a certain angle or with a curved mirror.

Leonardo learned more about math when he met a traveling teacher named Luca Pacioli in Milan. Together, they worked on a book about mathematical and artistic proportion. Leonardo also made detailed drawings to help show these ideas. He believed that practice should always be based on strong theory, with perspective being a key guide.

Engineering and invention

Vasari says that Leonardo made designs for mills, machines, and engines powered by water. He also created models and plans showing how to dig and tunnel through mountains, lift heavy weights using levers and hoists, and clean harbours with pumps.

Leonardo studied and designed many machines and devices. He drew detailed plans of how they worked. His notes fill over 5,000 pages. Leonardo understood mechanics well, using tools like levers, pulleys, gears, and wheels in his inventions. Some of his ideas, like a bridge and a machine to test wire strength, were used later.

Leonardo designed machines that used the power of water. He wrote about building strong, light bridges that could be moved easily. He also planned to change the path of a river to protect a city.

In 1502, Leonardo drew a design for a very long bridge for a ruler in Istanbul. The ruler thought it was impossible, but in 2001, a smaller version was built in Norway. Tests showed the design could support its weight.

Leonardo also designed war machines, like crossbows and cannons, to help in battles. He sketched early ideas for diving suits and flying machines, inspired by birds and bats.

Leonardo invented a special musical instrument called the viola organista, which used rotating wheels to bow the strings like a keyboard.

Inventions made reality

In the late 20th century, people became very interested in Leonardo da Vinci's inventions. Many projects tried to turn his drawings into real machines. Today, we have better materials, making it easier to build models of his ideas, especially his designs for flying machines.

One challenge is that Leonardo sometimes did not fully work out how a machine would function before drawing it. He might skip drawing important parts like gears or levers. Because of this, some models, like those shown at Clos Lucé, Leonardo's home in France, do not work perfectly unless they are adjusted a little.

In February 2026, Alex and Erin LaFollette built and tested the first real version of Leonardo’s ring-shaped lifebuoy design, using only materials and methods from the Renaissance time.

Projects

Leonardo da Vinci thought of many amazing tools and machines. He created a special tool to measure angles from the Codex Atlanticus. He also imagined ways to walk on water and compasses for drawing curved lines, including one powered by water [/w/1][w/2]. He sketched an early version of a helicopter called an "aerial screw". He also designed cannons and drew a lifebelt and a lifting machine that might have been used in the construction of the Egyptian pyramids.

Models based on drawings

Media related to Models of inventions by Leonardo da Vinci at Wikimedia Commons

Model of a Leonardo bridge

Model of Leonardo's parachute

Model after Leonardo's design for the Golden Horn Bridge

Ribauldequin (or organ gun)

Model of a fighting vehicle by Leonardo

Model of a flywheel

Model of wing by Leonardo da Vinci, in the National Museum of Science and Technology, Milan

Model of mirror grinding machine

Exhibitions

You can see many of Leonardo da Vinci's ideas and inventions at special places around the world. In Milan, the Museo Nazionale Scienza e Tecnologia Leonardo da Vinci always shows his projects. Another place, Clos Lucé, also has models of his designs on display.

In 2006, the Victoria and Albert Museum in London had an exhibition about Leonardo’s work. There have been other exhibitions, like one in Brisbane, Australia, in 2009. People could see his inventions from a museum in Florence, Italy.

Television programs

The U.S. Public Broadcasting Service (PBS) showed a program in October 2005 called Leonardo's Dream Machines. This show was about building and flying a glider that Leonardo designed.

In April 2009, the Discovery Channel started a series called Doing DaVinci. In this series, a team tried to build different inventions that Leonardo created.