ionises

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UV light, in contrast, ionises the atoms and is completely absorbed.)
La lumière UV, cependant, ionise les atomes et est complètement absorbée.)
At the same time, the absorbed ultraviolet light ionises the hydrogen, making it fully transparent.
Parallèlement, le rayonnement ultraviolet absorbé ionise l'hydrogène et le rend complètement transparent.
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