Oh, Kyle, so young, so unknowing.....
Almost all household motors with carbon brushes used to interfere with TV reception. It was noise in the form of square(ish) shaped "snow" on television screens. It could also be heard through the speaker. Used to drive my Dad nuts when he'd be trying to watch the news and Mom would fire up the Mixmaster to mash potatoes for dinner. I think the noise was the same on Radio, but you could not see the snow. LOL. Not sure of this, because we only had AM radio, and if I remember my High School electronics, both the sound, and picture are transmitted on FM. Now, however with printed circuits, chips, etc. and cable/satellite, there is far less chance for the noise to be picked up. Now if the class would please turn to page 106, we will discuss resistors. There will be a quiz!