Cholesteric liquid crystals undergo dramatic changes of colour with very small changes in temperature. The colour changes go through the whole spectrum as the crystals heat up or cool down. Blues indicate the hottest parts and reds the coolest.
Cholesteric liquid crystals undergo dramatic changes of colour with very small changes in temperature. The colour changes go through the whole spectrum as the crystals heat up or cool down. Blues indicate the hottest parts and reds the coolest.
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