Question

how does a mood ring work ?

Answer 1

lol what? :D

Answer 2

a mood ring

Answer 3

lemme google!

Answer 4

k

Answer 5

http://entertainment.howstuffworks.com/question443.htm

wow i never knew about this.. m gonna medal you for the question!!

Answer 6

lol thx

Answer 7

so did you understand it?
involves understanding of liquid crystals... thermotropic ones .. they are basically used in temperature detection.. different temperature = different colors

Answer 8

yup

Answer 9

ok cool!

Answer 10

i have one and when i take it off it turns black when i put it on it turns blue

Answer 11

Well.. ur surface body temperature is usually higher than surrounding temperature

low temperature = black color (cause the crystals apparently absorb everything)

when u put it on, the stone gets your body temperature which is usually higher (when u hug someone u feel that right? ) that twists these crystals and it selectively absorbs some light and reflect some other (apparently blue in ur case)

Answer 12

temperature dependent crystal structure