All you need are non-toxic yellow highlighters and water. Pop the back off of the marker and pull out the ink soaked felt that is inside. That's it! Easy, right? Turn the lights off and the blacklight on to see the water glow.
This is the blacklight fixture that we have. These blacklight flashlights also work great! I used roughly 6 cups of water per highlighter and ended up with insanely bright glow water! I tried to make glow water using every other color highlighter that I had on hand, and none of them glowed.
The first method to make water glow is as simple as getting hold of some standard tonic water. If you look at the ingredients on the bottle, you will see that it has an ingredient called quinine or quinine hydrochloride and this is the ingredient that makes the water glow under UV light. Hold the bottle close to the UV light in a dark room and watch the water glow a pale blue colour! Tip: experiment with different brands of tonic water as some may contain stronger concentrations of quinine resulting in a brighter and more vivid glow.
A great use for this trick as tonic water is perfectly safe to consume would be to fill your drinks with tonic water at your next party to give your guests a spooky surprise. The second method to make water glow is using something called "drain tracing dye" which is used by plumbers to detect leaks and the flow of waste water. You should be able to get this from your local plumbing store or DIY store in a small jar.
It's chemical name is fluoresceine. When you open it up, it looks like a lot of small maroon colored grains. Use either tweezers or your fingers it is messy to take a pinch of the grains and drop them into the water. Stir well. Amazingly, this is all you need to dye over a liter of water you can always add more for a more vivid colour. This method will produce a vivid green glow when exposed to UV light.
Note: This method is NOT edible so do not consume the water. The dye can stain clothes and other objects it touches. Be careful to prevent it from spilling. The final method to make water glow is possibly one of the easiest to reproduce however the process is quite messy so make sure you wear suitable clothes and protect your work area.
This method also has many applications. First experiment with different brands of highlighters as not all of them will work. You can see if it works by writing on a piece of paper and it should glow vividly under the UV light. If it works, use a pair of needle nose pliers and pull the tip out from the body of the highlighter.
Submerge the felt tip and the highlighter body in the water and let the ink and water blend together for a few minutes. If you intend to use more water, also use more highlighters to ensure the correct concentration of ink in the water.
This method will produce a colour the same as the highlighter colour that glows boldly under UV light. Note: As before, this method is NOT edible so do not consume the water. The highlighters can stain clothes and other objects it touches.
Be careful to prevent it from staining and use common sense. It has to be said that the tonic water method is edible but the other two are not so please be responsible and use common sense. If you have any problems or questions please don't hesitate to comment below. Reply 2 years ago. Wow thats awsome. I have never seen tonic water here in the us though. Any ideas where i might get some? I want to shock my guests!
Reply 5 years ago. Thanks for your kind words. Here we are using fluorescent paint to mix it with the water. Set aside. Step Then prepare the glass 4 for the experiment by filling water and with highlighter ink. My daughters helped me to place all the four glasses filled with different liquids in the dark room which we have set up for the experiment.
Now I asked my daughters to set the black light about 12 inches away from the liquids in the glasses. My kids are amazed by the glow of the water with a small suspense in their faces.
Here are the results you can see from the picture. Whereas glass 2 with tonic water glows amazingly under black light. The ultra violet rays being emitted by the black light makes the tonic water glow. But how? Tonic water contains a chemical compound called quinine. Quinine under black light turns the invisible ultra violet rays to visible rays making the water glow in the dark.
That is the reason black lights are used in forensic labs, photography, artistic performances, antiques, authentication of bank notes etc. The electromagnetic rays being emitted by the black light make the things that contain phosphors glow in the dark.
Phosphors are such compounds that gets excited and emit light under radiation. This phenomenon is called luminescence. The chemical compound quinine in tonic water contains phosphors which is why the tonic water glows under black light. Coming to the experiment glass filled with highlighter ink, we see a bright colored glow after it is exposed to black light.
The highlighter ink contains phosphors which gets reacted with the UV-A light spectrum coming from the black light. Thus making the water glow by emitting visible light. Next moving on to the glass filled with water and fluorescent paint. The reason for the glowing water applies here.
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