Topic: nucleus

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How Small Is An Atom?

Using a strand of hair, your fist, rice and sand grains, as well as the room you're sitting in right now (assuming it's not a huge gymnasium), let's try to visualize the basic building block of everything around us: A...

Kari Byron makes a cloud in a bottle

How do you make a cloud? On her show, Head Rush, Mythbuster’s Kari Byron demonstrates how clouds are formed by making one in a bottle. For this experiment, you can use a bicycle pump with a rubber stopper atta...

TED Ed: Just how small is an atom?

What is an atom and exactly how small is it again? And what’s in it? And how can I understand that in practical, everyday terms? — Grab a bowl of blueberries to snack on and we’re on our way with thi...