Why does the hand not burn when immersed in molten metal?

Over the past few days, the video recording the scene but not being burned has attracted the attention of many online communities. But looking back, it was just a normal person like everyone else. So does he have an esper power? Or is it dangerous to immerse yourself in melting steel as we think?

The famous science program MythBusters (Discovery channel) shows how the finger does not burn when immersed in metal (here is lead) melted. MythBusters programmakers - Adam Savage and Jamie Hynerman - have created many reports with the aim of experimenting with everything that we are still seeing, reading, and hearing everyday but have never been. verification of authenticity.

Adam Savage dipped his finger into a liquid lead at 450 degrees Celsius.

This program will answer the question: "Why do fingers not burn when immersed in hot lead?". Adam and Jamie used a simple trick, they tried to explain what had happened in the most understandable way.

In fact, immersing yourself in hot water above 60 degrees Celsius is likely to cause burns for us. Therefore, it is very dangerous to immerse yourself in higher boiling temperatures such as boiling oil (about 200 degrees Celsius), molten steel (1,400 degrees Celsius) or liquid lead. However, Adam said his fingers were "unscathed" when immersed in molten lead, quite similar to the case of Armenian men immersed in molten steel. The answer lies in the physical phenomenon called "Leidenfrost effect".

Leidenfrost is a phenomenon that occurs when a liquid comes into contact with a surface that is much larger than its boiling temperature. At this point, a part of the liquid will evaporate, forming a thin insulating layer. Applying this effect, you just need to dip your hand in the water first, then you can even immerse yourself in melted lead, with a temperature of about 450 degrees Celsius as MythBusters experiment, without being burned or injured. .