Albert Einstein was primarily known as a physicist and a scientist. He is best known for his groundbreaking theory of relativity, which includes both the special theory of relativity and the general theory of relativity. Einstein's work revolutionized our understanding of space, time, gravity, and the nature of the universe.
While Einstein is not typically regarded as an inventor in the traditional sense, he did make important contributions to the development of various scientific instruments and devices. For example, he helped invent an extremely sensitive device called the Einstein-Szilard refrigerator, which used the absorption and desorption of gases to achieve cooling. However, his most significant contributions were in the field of theoretical physics.
Einstein was also an accomplished author, publishing numerous scientific papers and articles throughout his career. He wrote extensively on topics related to physics, relativity, quantum mechanics, and the philosophical implications of his theories. His most famous publication is the paper on the special theory of relativity, which he published in 1905. Additionally, Einstein wrote several popular science books and essays, which aimed to explain his theories to a broader audience.