Liquid Crystal Thermal Sheets and my family

While cleaning up, I came across a set of liquid crstal sheets that respond to different temperature ranges. The lowest-responding one was already colored at room temperature, but the others were black. The next two higher-ranging sheets turned colors when I touched them, going through the color spectrum to dark blue if I held them long enough. The others didn’t respond to my touch.

I showed these to my wife Pepper Mill and my daughter MilliCal. "

“Mood Sheets!” Said Pepper Mill.
I gave them to my daughter, who touched them, and found that only the lowest-responding one changed color. Her touch wasn;t affecting the others at all. She touched it to her nose, and it changed color. It also did when placed in the crook of her elbow.

“Let me feel your hands,” I said. They were as cold as ice.

It was then that we noticed that the lowest-responding sheet was acting differently for her than for me. It was turning different colors than when I held it – I was heating it up above room temperature, but she was cooling it down!

Both my wife and my daughter have very cold hands (and feet). No wonder Pepper likes to curl up next to me in bed – she needs the body heat.

I used to buy those from Edmund Scientific. They were a really neat technology that never really went anywhere (other than aquarium thermometers, and really stick-this-on-your-kid’s-head fever thermometers, the only commercial application I know of is the battery tester built into some dry cells).

That sounds about sixty times cooler than Hypercolor tshirts. Somebody needs to market this again.

You left out mood rings which have been sold since at least the 70’s.

I was going to mention them, but I wasn’t in the right mood.