The Clear Science Staff was googling around the internet to assess the consensus on clear ice cubes, and we learned something awesome we didn’t know before. You can also make ice cubes that glow under a black light.
To do this, you use tonic water in your ice cubes. Tonic water (and bitter lemon as well) contains a molecule called quinine. Quinine has a conjugated pi system and so it fluoresces under a black light (which is a near UV light).
We learned this from this excellent chemistry.about.com page, which is also where the picture comes from. Now that’s some goth ice!

The Clear Science Staff was googling around the internet to assess the consensus on clear ice cubes, and we learned something awesome we didn’t know before. You can also make ice cubes that glow under a black light.

To do this, you use tonic water in your ice cubes. Tonic water (and bitter lemon as well) contains a molecule called quinine. Quinine has a conjugated pi system and so it fluoresces under a black light (which is a near UV light).

We learned this from this excellent chemistry.about.com page, which is also where the picture comes from. Now that’s some goth ice!