/kloc-The famous British chemist and physicist Dalton bought a pair of "brown-gray" socks for his mother on Christmas Eve when he was a child. When mom saw the socks, she thought they were too bright, so she said to Dalton, "How can I wear these cherry red socks you bought?" Dalton was very surprised. The socks are obviously brown and gray. Why did his mother say they were cherry red? Dalton was puzzled and asked his brother and the people around him. All the people who were asked said that the socks were cherry red except his brother. Dalton didn't let this little thing go easily. After careful analysis and comparison, he found that his color vision and that of his brother were different from others. It turns out that they are all color blind. Although Dalton was neither a biologist nor a medical scientist, he became the first person to discover color blindness and the first person to be found to have color blindness. For this reason, he wrote a paper "On Color Blindness" and became the first person in the world to put forward the problem of color blindness. Later, in order to commemorate him, people called color blindness a reference material for Dalton's disease:

Very young people answered Dalton's question about color blindness!