From the brains behind brains on, this is the Moment of Um.

Moment of Um comes to you from APM Studios. I'm Anna Weggle.

Um. We all go through really weird and challenging moments in our lives, right?

Maybe it's studying for a test that feels really hard, or navigating your first year in a new school,

or learning how to eat pizza with a mouth full of brand new braces.

One of my biggest challenges in life right now is making four separate dinners for everyone in my family every night.

And really five dinners, if you count my dog. I wish I had all the time in the world to prepare

everyone's perfect meal, and trust me, I'm dreaming of the day when my

one-year-old and my three-year-old can eat the exact same meal as me. And I do believe that day is

coming. But that day is not now. So in the few minutes, I have to get everyone's meals ready. I'm

chopping. I'm curing. I'm slicing. I'm dicing. I'm thawing. I'm boiling. I'm air frying and I'm

microwaving. What feels like dozens of tiny portions to suit everyone's needs. My microwave is a

lifesaver, truly. It heats things up much, much faster than the oven. But the thing I'll just

never understand is why, why, why,

when I pull food out of the microwaves sometimes, the bowl is flaming hot, but the food is ice cold.

How is that even possible? My buddy Josiah was wondering the same thing, so I found someone who

knows a lot about this.

Mic waves are sort of amazing because microwaves are meant to cook food using radio waves,

which is kind of awesome. My name is Matthew Katz, and I run ceramic materials workshop,

and we are a group that studies and teaches about the science behind ceramics. So inside your

microwave, we're making waves, and that will excite certain materials. And the most common one that they excite is water.

The water inside the food starts to shake, and when it shakes, it gets hot.

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