In 1895, Wilhelm Roentgen accidentally discovered that a cathode-ray tube could make a sheet of paper coated with barium platinocyanide glow, even when the tube and the paper were in separate rooms.
1895年，威廉·伦琴偶然
现
线管能使涂有一层氰亚铂酸盐钡的薄相
，甚
当线管和相分别放在不同的房间时也能。
现问题，欢迎向我们指正。
