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Electromagnetic Wave

19 bytes added, 08:59, 21 February 2019
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| style="height:20px; width:50px; text-align:center;" |Ultraviolet
| style="height:20px; width:500px; text-align:center;" |Revealing fluorescent ink to detect forged bank notes, tanning beds, sterilising water.
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| style="height:20px; width:50px; text-align:center;" |X-rays