How to Play With an Ultra Violet Light
How to safely do some cool things with a ultra violet torch or flashlight!
[edit] Steps
- Understand that an ultraviolet light is used for security. For example, shine your UV light on a bank card, credit card, medical card, debit card, etc., and you will see a small hawk or writing appear that only shows when held under a UV light. Shine the UV light on a new £20 note and it will say: "twenty pounds".
- Put the UV light in vinegar and leave in the freezer for up to 14 hours and shine the light on a computer, microwave, TV etc. It will either turn the appliance off or make the appliance produce a small humming like noise.
[edit] Warnings
- Always be careful with a UV light. They're not potentially dangerous but if the UV light is very strong, do not hold it near your head, body etc.
