Today, if you visit Google you might notice a whacky logo that might appear to you as a bomb of some sort. In reality, it is Google celebrating the birthday of Hans Christian Ørsted. Who? Well, he was a Danish physicist born in 1777. He is best known for the observation of electric currents, which can induce magnetic fields. In other words, the logo, which you see below, shows how wires are passing an electric current to help the compass work.
He died in 1851 and was buried in Copenhagen. A man, most of Google searchers had no clue about, is now well-known due to Google.
So when someone asks you, what is that bomb on Google's home page, tell them the importance of the logo and Ørsted's work.