On this day, 398 years ago, on January 25, 1627 (December 9, 1626, the founder of modern chemistry), Boyle was born. On January 25, 1627, in a noble home in Munster, England, Ireland, a little boy was born. He became the world-renowned chemist and physicist Boyle. Boyle showed extraordinary memory and language skills as a child. My father liked little Boyle very much, hired him the best governess, and sent him to study in Italy and Switzerland. However, Boyle was not satisfied with the comfortable life of such aristocratic children and was unwilling to spend his precious youth in a comfortable and comfortable life. He hoped that he would make a difference in science. In 1645, Boyle had just turned 18 years old. He settled in Dorset for seven years, reading books on science, philosophy, theology, etc., and began scientific experiments. He later moved to Oxford. In 1654, he established the Oxford University Laboratory and began to devote himself to scientific research. Boyle attaches great importance to the role of scientific experiments. Many of his scientific discoveries were obtained through experiments. Once he was doing an experiment and accidentally sprinkled a drop of hydrochloric acid on the petals of a violet flower. He quickly put the flowers into a water cup to rinse them. After a while, the petals turned from purple to red. This surprised Boyle. He used various other acids to do the same experiment, and the results showed that violets also turned from purple to red. Boyle was very excited by this discovery. He experimented with alkali and found that alkali could also change the color of violets. Boyle, who was good at thinking, not only used a variety of flowers to soak various infusions, but also used herbs, moss, tree bark and the roots of many plants to soak many different colored infusions. He tested one by one and found a kind of A purple infusion extracted from litmus moss turns red when it encounters acid and blue when it encounters alkali. In this way, he invented litmus test paper, an indicator for identifying acids and bases, which brought great convenience to scientific research. Boyle also clarified the principle of the rise and fall of air pressure based on experiments, and discovered the law that the volume of a gas changes with pressure, which was later called Boyle's Law in physics. Boyle died in 1691. He has written many books throughout his life, mainly including "Physical and Mechanical Experiments on Air Elasticity","Suspicious Chemist","Experiments and Considerations on Color", etc. He criticized the idealistic view of "elements" of the gold touchers at that time and defined elements as substances that could not be decomposed, so that chemical research began to be based on science. Engels once pointed out: "Boyle established chemistry as science."