Mood ring

A mood ring is a finger ring that contains a thermochromic element, or "mood stone", that changes colors based on the temperature of the finger of the wearer. Finger temperature, as long as the ambient temperature is relatively constant, is significantly determined by peripheral blood flow, which is modulated by the autonomic nervous system. A mood ring contains liquid crystals that change color depending on the temperature.

For other uses, see Mood ring (disambiguation).

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.