The 4A
Great Thinkers!

Ada Lovelace was an woman who lived in England during the 1800s. Her full name was Augusta Ada King, Countess of Lovelace, but most people simply call her Ada Lovelace. Even though she lived in a time when women weren’t often to study science or math, Ada was by numbers and technology. She had a talent for understanding how things worked, especially machines.

Ada became friends with Charles Babbage, a famous and mathematician, who was working on an idea: a machine called the Analytical Engine. This machine was designed to solve math problems, and it’s often thought of as an early version of a computer. Ada was by his invention and took her own ideas further.

Ada didn’t just see the Analytical Engine as a calculator; she believed it could follow a series of to do much more, like creating music or even pictures. She wrote a set of detailed notes and instructions for the machine—what we now call an . Because of this work, Ada is often celebrated as the world's first computer programmer! Even though computers didn’t exist in her time, Ada’s imaginative thinking and ideas laid the for the technology we use today. Her work inspires scientists, programmers, and dreamers around the world, proving that begins with curiosity and . Isn't her story amazing?

Shuji Nakamura is a scientist and inventor who changed the world with his work on blue LEDs (light-emitting diodes). Born on May 22, 1954, in a small fishing village in Japan, Shuji grew up surrounded by nature and developed a love for building and creating things. He studied at the University of Tokushima, where he earned his bachelor's and master's degrees.

After graduating, Shuji joined a company called Nichia Corporation, where he worked on developing new technologies. At the time, scientists had already invented red and green LEDs, but creating blue LEDs was a huge . Shuji was to solve this problem, and after years of hard work, he succeeded in inventing the first high-brightness blue LED in 1993. This invention was a major because it allowed scientists to combine red, green, and blue light to create white light, which is used in lighting.

Shuji's invention of blue LEDs has had a impact on the world. It has helped save energy, reduce electricity costs, and improve lighting in homes, schools, and cities. For his incredible achievement, Shuji was awarded the Nobel Prize in Physics in 2014, along with two other scientists, Isamu Akasaki and Hiroshi Amano.

Today, Shuji Nakamura is celebrated as a in science and technology, and his work continues to inspire people around the globe.