A Complete Collection of 100000 Whys
Fav十万个为什么
为什么物质会发光？
1、物质发光是因为内部电子受到能量激发后跃迁到更高能级，当电子返回低能级时会释放能量，以光子的形式发出。
2、某些物质在受到外部能量（如热量、化学反应、电场等）作用时会发光，这种现象称为受激辐射或荧光。
3、放射性物质会自发地发出射线的能量，这些射线与物质相互作用时也会导致物质发光。
4、物质发光的强度和颜色取决于电子跃迁的能量差，不同物质具有不同的能级结构，因此发光的颜色和强度也不同。
5、自然界中，如萤火虫的发光是由于生物化学反应产生的光，而恒星发光则是由于核聚变产生的巨大能量。
总之，物质发光是电子能级跃迁、外部能量激发、放射性衰变等多种物理和化学反应的结果，这些过程导致物质以光子的形式释放能量。
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