The mood ring was invented by joshua reynolds.
Mood ring how it works.
Mood rings enjoyed fad popularity in the 1970s and are still around today.
Mood rings contain thermotropic liquid crystals inside the stone or the band of the mood ring.
The mood ring was created in 1975 by two new york inventors josh reynolds and maris ambats who bonded.
The stone itself is made up of thermotropic liquid crystals which move and bend in response to changes in temperature when these crystals move the color.
A mood ring is a ring that contains a thermochromic element such as liquid crystal that changes colors based upon the temperature of the finger of the wearer most new rings come with a color chart indicating the supposed mood of the wearer based upon the colors indicated on the ring.
These liquid crystals are able to show different colors at different temperatures.
These liquid crystal molecules are very sensitive.
Most mood rings work in the same way.
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 see how lcds work for lots of details on liquid crystals.
They change position or twist according to changes in temperature.