Light Flashlight
If UV light is invisible, why can I still see light coming out from the UV flashlight?
I am demonstrating invisible light by showing UV light on UV detecting beads, but I don't know how I can say it is invisible since people can see light coming out of the flashlight.
In a UV flashlight, there is not only Ultra Violet light but also light from the visible color spectrum. A UV flashlight is used to show the effect of ultra violet rays on an object. Producers of such flashlights add visible light simply to ensure and prove that the product is working.
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