Any use for a UV flashlight?

[Joezilla]

Bees, and many other insects, can see UV, in fact they rely on it for flower identification and navigation. It's IR, and just normal red, that honeybees don't see. Many flowers have patterns that can be seen in UV (through a UV sensitive imager, just like viewing IR).

Birds can see in UV as well and their feathers have UV 'colours'.

Note that this doesn't mean that most of them will fluoresce under UV light, that's different.

woops! thats right! We had a room with observation hives bathed in Red light (they can't see) and used the black light to find the UV marked queen (which they can see and we can see). !! Sorry. I got confused when I was thinking back to that experiment.

 

[m]

I'm not sure but it might be able to greatly help you follow a blood trail.