Mood rings, containing a strip of thermotropic liquid crystals encased in clear quartz or glass, change color depending on the wearer’s body temperature, not mood. They were discovered by jeweler Marvin Wernick in the 1960s and popularized by Joshua Reynolds in the 1970s.
Accidentally discovered by jeweler Marvin Wernick in the late 1960s, mood rings, which are encased in a stone made of clear quartz or glass, contain a flat strip of thermotropic liquid crystals that are believed to change color depending on the temperature. mood or emotional state of the subject wearing the ring. Wernick discovered the process when he made an emergency call with a friend of his who happened to be a doctor. The doctor used a strip of thermotropic material on a child’s forehead to monitor his temperature, and gave Wernick the idea for the mood ring.
Although Marvin Wernick technically discovered the mood, Joshua Reynolds is most often credited for what became one of the biggest fads of the 1970s. Reynolds was the first to popularize the rings in 1975 and while they were a fad in the 1970s, they have continually resurfaced for periods of time over the years.
Some people believed that liquid crystals could measure mood through temperature, however this is not possible. There is no proven scientific evidence that mood rings actually show the mood of the ring wearer. The scientific explanation of how mood rings work begins with the thermotropic liquid crystal within the ring.
The liquid crystal inside a mood ring is sensitive to heat and works like a thermometer. Liquid crystals are calibrated to normal body surface temperature (82°F or 28°C) and show body temperatures higher than normal surface temperature. A person wears a mood ring and their surface temperature is transported to liquid crystals through their finger.
When a person’s body temperature increases, the temperature of the liquid crystal increases, and it acquires a different molecular structure at each temperature. Each molecular structure reflects or absorbs different wavelengths that are responsible for the color change in mood rings. The color of the ring actually changes due to body temperature, not due to mood.
When the liquid crystal was calibrated for body temperature, it was also calibrated for color. The average body temperature shows a blue/green or teal color in the mood ring.
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