基本原理: 紫外光谱是由样品分子吸收一定波长的光，使其电子从基态跃迁到激发态引起。 — 分子通常是处于基态的，但当分子受紫外光照射时,可吸收一定大小的能(ΔE=hv)的紫外光，此能量恰好等于电子基态与高能态能量的差值(E1- E0),使电子从E0跃迁至E1。用仪器将紫外光强度在吸收池前后的变化记录下来，得到紫外光谱。
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I hate all the terrorists in the world, whatever the purpose of their struggle. However, I support every active civil revolt against any occupation, and Israel, too, is among the despicable occupiers. Such revolt is both more just and more effective, and it does not extinguish one's spark of humanity.