How a Microwave Really Heats Your Food

Three minutes ago this pasta was frozen solid. There was no flame, no hot plate, and nothing glowing in there. Just a little orange box that hummed. So how does a microwave actually heat food? And why is the outside burning hot while the middle is still frozen? Chapters 0:00 Ding 0:31 Shaking, not baking 1:24 The box behind the hum 2:04 A chocolate bar in a pocket 3:01 So why is the middle still frozen? 4:17 Hot spots… and the speed of light 5:30 A window that's also a wall 6:18 And leave the fork out 7:00 Ding, again