Jeopardy - thee are so wise

I was a little behind on my Jeopardy One-a-Day calendar when I ran across this clue tonight:

A. "It took thirty years for the appliance to be in over 50 percent of U.S. homes; the need to bake a potato in three minutes wasn't pressing."

I won't bother waiting for a response because the question is obviously, "What is the microwave (oven)". See, I'm not so odd. However, the microwave oven was invented in the 50's SO yeah, maybe not having one is a little odd.