ChristinaA21

Then yours is the 43rd.;)

unfortunately the tube broke on the top edge over night...

Being a slightly mad scientist myself, I really appreciate your project!Have you tried laundry detergent with optical brightener as liquid?

Thats what I use it for ;) I use mollotow refillable markers, they are more on the expensive side - where did you get yours? I built a mini version of your steampunk lamp yesterday, with what I had lying around - a coin cell, copper tape, an UV-LED and a test tube (Reagenzglas), works perfectly well, too.

thank you :)it's still working

You are not the only one ;)

Adjustable soap-bubble-wandI needed easy to make soap bubble wands for a science project with small kids about two years ago - and this was the solution - I am using them a lot with self made bubble solution: