How to Make Glowing Jelly

26 Oct

Orbiting Frog

Here’s a really simple and fun experiment to do at home: make glowing jelly (or jello, American friends)! The method is really easy – you’re just making jelly – but you do need some kind of UV light source to see the effects[1].

Ingredients

It’s a very simple idea: you make jelly but use a 1:1 mixture of plain ol’ water and tonic water (e.g. Canada Dry). Tonic water contains quinine which is naturally fluorescent and so the resultant jelly will glow under a UV light. Here’s what I did:

  1. Boil 100ml of water and mix with the jelly so it all dissolves.
  2. Top up with cold water up to 300ml.
  3. Add 300ml of tonic water.
  4. Mix it up really well and put it in the fridge.

Quinine glows a blue-ish colour under UV light so I used green jelly to maximise the effect. I’m assuming that the jelly acts as a…

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