You don't need to buy any thing at all ;) I bet you already have everything i.e you need the following:
1) You need a torch light (you can use your cell phone's torch)
2) A transparent bottle full of water.
Teachers! Did you use this instructable in your classroom?
Add a Teacher Note to share how you incorporated it into your lesson.
Step 1: The Picture Says It All
I used my cell torch light and captured the picture from another cell phone. Isn't it easy?
Participated in the
Make it Glow Contest 2016