有趣的发光现象夜幕来临的时候,管形的日光灯放出明亮、柔和的光辉,凝神于工作、学习的人们简直会忘掉黑夜。然而它是怎样发光的呢? 玻璃灯管的内壁塗着一薄层特制的发光粉,管内充满着一些稀薄的水银蒸气和氩气。通电后,由于带电粒子在其中熙来攘往,与水银蒸气分子发生碰撞,就使水银蒸气放出人眼看不见的紫外光来。这些紫外光照射在发光粉上,发光粉就被激发而放出可见光。但您是否想到, Interesting glow When the darkness comes, the tube-shaped fluorescent lamp emits a bright, soft glow. People who concentrate on work and study simply forget about the night. However, how does it shine? The inner wall of the glass tube is coated with a thin layer of special luminous powder. The tube is filled with some thin mercury vapor and argon. After electrification, because charged particles are rushing in and out, colliding with mercury vapor molecules, the mercury vapor emits ultraviolet light that is invisible to the human eye. The UV light is irradiated on the luminescent powder and the luminescent powder is excited to emit visible light. But did you think that