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 mood? Both of these items use thermochromic materials. These substances ...
Both of these items use thermochromic materials. The colour of these substances is affected by changes in temperature. This effect is usually reversible, meaning the material returns to its original ...
The mug has a price tag of $32 on the Biden Victory Fund Webstore. US President Joe Biden has added colour-changing mugs that glow in the dark to his official campaign store. The mugs, which bear a ...
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