How did Liu Qian bend the spoon? Just pay attention to one detail here, that is, Liu Qian has been rubbing it with his fingers in the middle of the spoon. What is the reason? In fact, it is to generate heat. What's the use of generating heat? You will know after reading the following.

1932, the Swede Aurand first observed the "memory" effect in the Au-Cd alloy, that is, once the alloy is heated to a certain transition temperature, it can magically change back to its original shape. People call the alloy with this special function shape memory alloy. The development of memory alloy has only been more than 20 years, but it has attracted worldwide attention because of its special functions in various fields, and is known as "magical functional materials".

In fact, this magic is very simple. First, prepare an iron spoon (note that it is a thin iron spoon), and then say to the audience, "I will show you a magic trick to make the spoon bend." Do you believe it? " Then he took the spoon and said, "This spoon is absolutely fine. You can't play it. You can bend the spoon with both ends. Generally, it can be bent with a little force. Just be gentle when you show it to the audience ...