This is an I-Heart podcast.

Guaranteed Human.

Hey everyone, it's Daniel.

I have a new book out now called Do Aliens Speak Physics about whether or not we have physics in common with aliens?

I think it's a lot of fun, but here's a totally unbiased review from Phil Plate, author of

bad astronomy.

Quote,

Whiteson makes us think about how we think about aliens and how we think about the universe

at a fundamental level and does it in a readable, understandable, and even funny way.

If we ever meet aliens, the first thing we should do is give them this book.

So go out and pick up a copy of Do Aliens Speak Physics? I think you'll enjoy it.

When you see the universe through the lens of physics, you start to see physics everywhere. Why is glass transparent,

but stone isn't? Why are bicycle stable? How do tornadoes start? The mysteries of physics

aren't just out there in deep space. They're right here in front of us, raising questions and

demanding answers every day. Today we'll tackle a topic that I've wondered about since I was

a little baby physicist, looking at the world and wondering how it worked. All you need for this

inspiration is a light bulb and your hands, with which you can make something out of nothing.

Shadows aren't really anything. They're a lack of something. They're negative objects. But our

minds see them as positive as a thing in the world rather than just the absence of light.

And shadows have been surprising and confusing people for thousands of years.

Today we'll dig into the physics of shadows and ask whether they can break one of physics's most hallowed principles.

Welcome to Daniel and Kelly's extraordinary shadowy universe.

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