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Image: UV LED Fluoresence

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Description: An ultraviolet light-emitting diode (UV LED) with peak emission at 380 nanometres. The UV shows the security threads in the Canadian $5 bill and the fluorescent stripe and "20" numerals printed on the back of the American $20. The bus tickets are printed on "dayglo" paper and fluoresce strongly in UV light. The dishwashing soap contains UV brighteners.
Title: UV LED Fluoresence
Credit: Own work
Author: Wtshymanski
Usage Terms: Creative Commons Attribution-Share Alike 3.0
License: CC BY-SA 3.0
License Link: http://creativecommons.org/licenses/by-sa/3.0
Attribution Required?: Yes

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