Rogbaken, 12 14 ~ 1292. Born in Ichester, Somerset, he is a great British materialist thinker and scientist. He has many works, among which masterpieces are the most famous.

Roger bacon studied at Oxford University and was a Franciscan monk. After studying in Paris, he obtained a doctorate in theology and returned to England in 1250 to teach at Oxford University. He was imprisoned for 15 years because the scientific ideas in many of his works were not accepted by the church and offended the fascist leaders.

Roger bacon's philosophy is materialistic. At Oxford University, he read many Greek and * * * works. During his stay in Paris, he wrote and taught the analysis of Aristotle's works, enthusiastically praised and publicized the thoughts of ancient philosophers such as Aristotle, and sharply criticized scholasticism.

He strongly opposes the excessive worship of authority, and regards this, habit, prejudice and conceit as four obstacles to gaining true knowledge. Although he is a monk himself, he lashed out at the decay, greed, luxury and pride of the monk class.

It can be said that roger bacon is a pioneer of modern experimental science. He actively advocated and engaged in scientific experiments. From the point of view, observation and experiment are the only ways to gain true knowledge.

Roger bacon has made in-depth research in physics, especially in optics. Most of his scientific experiments are optical, and many of them are based on Al Haizi's works. Most of his theoretical research on optics is based on experiments, and he imagines how to apply it to real life.

For example, he studied the magnifying effect of convex lens and the law of reverse refraction of light through experiments. He imagined making telescopes, microscopes and glasses. He also proved through experiments that the rainbow is a natural phenomenon formed by sunlight shining on water droplets in the air, not made by God.