If you’ve been following my blog you know my kids are currently obsessed with things and experiments that glow in the dark. For some reason making things glow really ups the cool factor in my kids eyes. So it only makes sense that we would take one of our favourite activities and make it glow – Glow in the Dark Oobleck!
I really wasn’t sure how this would work or even if it would work, but it was a great success!
I took one cup of cornstarch and started adding tonic water. The quinine in the tonic water glows under black lights. To be honest we didn’t measure the tonic water but it worked out to about 2 cups worth that we slowly mixed in until we got the right consistency.
Then we went into our mudroom, turned off the lights and sat on the floor in front of our the black light.
It worked! It glowed!
And it kept all of those awesomely, amazing qualities that we love so much in Oobleck. When pressure was applied it turned solid, like a putty consistency, but as soon as you removed the pressure it turned back into liquid.
I tried to get some video of the kids playing with it so you can see the non-Newtonian qualities in action. It’s really quite cool, but hard to capture under black light.
And it wasn’t bubbly. I thought the carbonation might affect things, but we never noticed any bubbles or other reactions from the tonic water other than the glow.
For more on the science behind oobleck, check our original post on this mesmerizing non-Newtonian liquid.
Adding in the glow factor made our oobleck experience a little different. My kids were so quiet playing in the dark with the oobleck. It was very calming for them. I can see this being a great calming activity for them.
And the best part? It is completely non-toxic!
I apologize for the poor quality of the photos and video, it is REALLY hard to take good images when your only light source is a black light! Here is a great video of oobleck that we took outside in the sunlight.