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The original "mood ring" introduced as the Mood Stone in the summer of 1975. 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 ...
A mood ring is an example of this property used in a consumer product although thermochromism also has more practical uses, such as baby bottles, which change to a different color when cool enough to drink, or kettles which change color when water is at or near boiling point.
Thermochromic ink (also called thermochromatic ink) is a type of dye that changes color in response to a change in temperature. [1] [2] [3] It was first used in the 1970s in novelty toys like mood rings, but has found some practical uses in things such as thermometers, product packaging, and pens. [4]
The mood ring may be far out, man, but it has a practical, medical history. The ring was conceived in the 1960s, when Marvin Wernick went to an emergency call with a doctor friend, and watched him ...
"Love Tester" mood rings and necklaces sold over the past five years are being recalled after testing showed they contain high levels of lead, the U.S. Consumer Product Safety Commission said.
Think of it as the mood ring of makeup. Don't believe us? Watch the product in action here. The cosmetic is coveted for its ability to bring out the hue that’s truly you, but that’s not all ...
Liquid crystal thermometers are also commonly used in aquariums, [2] in homebrewing, [3] and in mood rings. The liquid crystal thermometer was invented by Bob Parker in California, one of many of the inventor's thermochromic applications patented in the 1970s.
A mood ring is a type of ring created in 1975 that changes colors based upon the temperature of the finger of the wearer. Mood Ring may also refer to:
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