Do there exist materials whose Opacity varies with temperature? E.g a Material that becomes more Opaque as it gets hotter?
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1$\begingroup$ Are you looking for a reversible effect? $\endgroup$– Ed VCommented Nov 22, 2023 at 13:09
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$\begingroup$ Are you asking for solid materials or gases/liquids? Certainly in liquids and gases there are all sorts of nonlinear, complex opacity behaviour that would fit your bill... Solids are just.. not opaque? $\endgroup$– AtmosphericPrisonEscapeCommented Nov 22, 2023 at 15:49
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$\begingroup$ Solids. A normally transparent Solid. $\endgroup$– blademan9999Commented Nov 22, 2023 at 15:57
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2 Answers
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There are certainly materials which change colour with temperature. This behaviour is called thermochromism.
answered Nov 22, 2023 at 10:03
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a Material that becomes more Opaque as it gets hotter?
Many meats and other proteins exhibit this property
Salmon:
Other fish:
Chicken:
But perhaps the best example is egg whites:
Now, I think I will go eat.
