Did you ever break a glass? I hope most of you did. But do you know, there is a glass which is unbreakable? Even a hammer or a bullet didn’t break that glass. Want to try to break it…
Exploring the Fascinating World of Engineering
Exploring the Fascinating World of Engineering
Did you ever break a glass? I hope most of you did. But do you know, there is a glass which is unbreakable? Even a hammer or a bullet didn’t break that glass. Want to try to break it…