The stone in a mood ring is either a hollow glass shell filled with thermotropic liquid crystals, or a clear glass stone sitting on top of a thin sheet of liquid crystals these liquid crystal molecules are very sensitive; they change position, or twist, according to changes in temperature. This change in molecular structure affects the wavelengths of light that are absorbed or reflected by the liquid crystals, resulting in an apparent change in the color of the stone.
The inside of the ring conducts heat from your finger to the liquid crystals in the "stone." The color green, which signifies "average" on the mood ring color scale, is calibrated to the surface temperature of a typical person, approximately 82 degrees Fahrenheit (28 degrees Celsius). If your surface temperature varies far enough from the norm, then the liquid crystals in the stone alter enough to cause a change in the color reflected. And if you take a mood ring off, it will normally change to black unless the ambient temperature is very high.
Take a look at the Mood Ring colors listed below, and what "mood" they represent. The colors are listed according to the change in temperature they represent, with dark blue being the warmest and black the coolest.
· Dark blue: Happy, romantic or passionate – Day dreaming ah :-)
· Blue / Light Purple: Calm /relaxed, sharp, witty. - You are a cool guy. I like it buddy!!!
· Blue-green: Somewhat relaxed. You’re feeling good and not much will get you down today! You think this info is amusing !!!
· Green: Normal or average – A little on Edge? Little edgy is ok? If everyone is stepping on your Toes, put on shoes!
· Amber: A little nervous or anxious – Things will get better. Its time for Comfort food. Cookies, Chips, Ice Cream! In small portions. Who will know? Keep Cookies in Cupboard, Ice Cream in Freezer. Be Philosophical :-).
· Gray: Very nervous or anxious
· Black: Stressed, tense or feeling harried – Count to 10! Go for a walk! Have a glimpse of your office Crush! This mood will pass! Just stay from me until it does :-)
However, the amount of thermotropic liquid crystals in a mood ring was so small that it couldn't measure with any amount of accuracy what your real mood was. You'd have to be really, really angry to get the stone to reflect your true body temperature. And also due to fluctuations in the manufacturing of the rings by various companies the above colors are not considered universal. It is also worth noting that variations between different people's bodily temperatures and the environmental influences on the thermotrophic crystals may make mood rings somewhat unreliable.
In the end, they were just a neat fad, and a kitschy piece of jewelry that was fun to wear.
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