Sabtu, 14 Agustus 2010

read my emotion


MOOD RING

i have a mood ring when i was little. but i lost it. i don't know where is it now. but i missed it. i wish i could have a mood ring again. but it's so hard to get one. so, let's learn about it. (this information is from wikipedia. all i know mood ring is a ring that could changes colors adjust your emotion when you wear it)

While the technical discovery of the mood ring was made by Marvin Wernick, credit is most often given to Joshua Reynolds for what became one of the biggest fads of the 1970’s. Reynolds was the first to popularize the rings in 1975 and even though they were a fad in the 70’s, they continually resurface for periods of time throughout the years. It was invented in 1975 by Marvin Wernick when he accompanied a physician to a nearby emergency. When the physician pulled out a strip of thermotropic material to gauge the child's temperature by applying the strip directly to her forehead, jewelry designer Wernick knew he had the makings of a winning item. Wernick encapsulated ovals of the material within clear glass cameos and glass domes set in brushed gold and silver ring settings. His signature "hang-tag" contained claims for the ring's properties.

A mood ring is a specialized liquid crystal thermometer, wearable on the finger. The ring is typically ornamented with a faux gemstone (usually made of quartz or glass) which is either a clear capsule filled with thermochromic liquid crystal, or has a thin sheet of liquid crystal sealed underneath. Changes in temperature cause the crystal to reflect different wavelengths of light which changes the color of the stone. The liquid crystal used in mood rings is usually set up to display a "neutral" color at the average human skin temperature, which is approximately 98.6 °F (37.0 °C).

The theory behind the idea that the ring indicates the wearers' mood is based on a claim that body heat fluctuates with the emotional state of the wearer. Human body temperatures are known to vary by small amounts (less than 1°C) over the circadian and menstrual cycles and when the body is fighting an infection. Variations in ambient air temperature appear to have a larger effect on the temperature of the ring than changes in the body temperature of the wearer. It appears that no direct correspondence between a particular mood and a specific color has ever been substantiated.

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