the.com/mood ring
A thermometer that let the 70s pretend feelings were chemistry, not weather.
means A ring set with a heat-sensitive stone that changes color as your skin temperature shifts, marketed as a window into your emotional state.
from Invented in the mid-1970s by two New York inventors who sealed thermotropic liquid crystals — the same temperature-reactive technology used in medical thermometers of the era — under a glass or quartz stone. As blood flow to the fingertip changes with mood and circumstance alike, skin temperature shifts slightly, and the crystals twist to reflect different wavelengths of light, cycling the stone through blue, green, amber, and black. The 'color means this feeling' charts were a marketing invention layered on top of real thermochromic science — the ring measures temperature, not emotion, but the two were close enough, often enough, to make millions of people believe otherwise.
- actual science
- liquid crystals shifting shape as skin temperature changes
- not mind reading
- cold hands just mean cold hands, not heartbreak
- invented
- 1975, by two New York inventors chasing a fad
- black means
- nothing mystical, just very cold or broken crystal