Hello, today I am going to show you a magical cup. A few days ago, I went to the rail museum with my family, and while we were seeing different train models, we discovered that you could buy souvenirs there. This museum is in Chanakyapuri.
As soon as we entered the shop, I saw various railway-related items like train scale models, stickers, stamps, and cups. I noticed this cup; it was completely black, so I asked the guy there why it was black. He replied that it is a magical cup that changes color. He explained that when you pour something hot in it, a train with some text about trains appears.
This color change is due to thermochromic ink, which is applied to the cup. When it comes into contact with heat, the color changes. And when the cup cools down, the color returns to its normal state. However, if you scratch the cup, the ink in that area will get removed and it will not change.
I hope you enjoyed reading this blog. Thank you for reading! Hive on!
Note
The images used are original