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UV Hyper Reactive Putty

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Super Cool Physics Toys

In the past few years, we have covered plenty of cool putties here. This UV Hyper Reactive Putty is also worth a look. When exposed to UV light, its color changes from white to purple. You can still stretch, bounce, and pull this non-Newtonian putty.

More gadgets like this: here

The purple color is not permanent though. This putty returns to its original color after a while.

[where to find it]

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