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Shadow Hunting with Photochromic Powder

Shadow Hunting with Photochromic Powder

Recently our friend and fellow tinkerer, Celeste Moreno, introduced us to a cool new material - Photochromic Powder. This powder reacts to UV light and it can be used in a bunch of different ways.

The shadow of a strawberry basket on paper coated with photochromic pigment

Celeste mixed the powder with glue and painted the mixture on some paper. Assisted by a handy UV torch, the Tinkering Studio Team set out to hunt some shadows around the Exploratorium. The magic of this material is that it responds to sunlight as well as the UV light from our torch. We played with shadows that were naturally cast around the museum, as well as trying to capture cool shadows from objects around the space. We are excited by what we are able to see during our shadow hunting adventures and can’t wait to do more. How would you use photochromic powder? Share your ideas and tag us @tinkeringstudio. And as always, if you have any questions, let us know :) Take a look at the gallery below to see some of our explorations: 

Two UV lights pointed at a binder clip
Celeste Moreno points two UV lights at a binder clip on paper coated with photochromic pigment
an outline of a monster on paper coated with photochromic pigment
the shadow of a binder clip turned into a person on paper coated with photochromic pigment
using paper coated with photochromic pigment to catch shadows of Rolling Through the Bay
The shadow of a strawberry basket on paper coated with photochromic pigment
the shadow of a strawberry basket on paper coated with photochromic pigment
holding a UV light up to paper coated with photochromic pigment
bending down to catch shadows on paper coated with photochromic pigment
the shadow of a bird on paper coated with photochromic pigment
tinkering with paper coated with photochromic pigment