Why do the judges wear white periwigs in the courts? To show they are full of wisdom like an old philosopher or to show their authority?

Sehen Sie eine Übersetzung

It's part of a tradition, and there's a lot of different stories behind the tradition

One is that it was fashionable back in the day to wear wigs because it meant you were of high status and wealthy.

I read somewhere that, during that time (around the 1400-1600), there was syphilis going around Europe and America. A symptom of syphilis is losing your hair, so powerful people wore wigs to hide the fact that they may have syphilis. Not sure if this is true or not.

Also, when they wear a wig with a black robe, it shows that they're unbiased because they are hiding their real selves.

These days, it's just tradition and expectation now. It's like how lawyers are expected to wear suits.

As moncriefsme said, they don't wear wigs in the US