Can someone from the sciencey side of tumblr please explain this ?
This is called shape memory. It’s made from an alloy of titanium and nickel (I believe it’s called nitinol). It has the ability to “remember” the shape it’s taken.
When cold you can bend it whatever which way, but once you heat it (or in this case put it in what I presume is hot water) it will take the original shape.
One time, in biology class, we were talking about sight and how some are color blind and our teacher showed us this picture and said “well, regular vision people for instance can see the number 29 in the second circle, but color blind people can’t. Do you see it?” And everyone said yes expect for this one guy in the back, he stood up and started screaming in horror “OMG IM COLOR BLIND I DIDN’T KNOW THIS WHAT DO I DO??!!!!!”
I love these tests, I’m colour blind and it’s crae that I can’ see what other people or I see something different to others.