The best way to use mood ring paint is to place it on surfaces that will experience temperature changes. For instance, a wall probably wouldn’t be the best fit for mood ring paint, because you ...

Both of these items use thermochromic materials ... At the heart of heat-sensitive mugs’ colour-changing magic are leuco dyes. The dyes contain many tiny capsules. Each capsule holds a dye, a colour ...

Have you ever seen a mug that changes colour once a hot drink is poured in? Or a ring that is said to change colour with your ...