Atomic nucleus

Սա ունի բջիջ պրոկարիորտ առանց կորիզի

Draw atomic nuclei

Nuclear energy is produced by splitting atoms or by bringing them together.

So the atom is roughly on the scale of an angstrom.

One femtometer.

The quarks, these pink things, are the things that make up protons and neutrons that make up the atomic nuclei in your body.

And the proton is actually the defining

You see these black dots? Those are the stable nuclides and all the other guys are radioactive.

In which case, the nucleus... would be here.

Think how many discoveries they represent.

They just have a probability function.

But a first mental model in your head is at the center of this atom, of this carbon 12 atom, you have this nucleus.

One, two, three, four, five, six.

The most stable nucleus is iron, right in the middle of the periodic table.

So imagine a ball that is as tall as a two story house.

It contains protons, neutrons and electrons.

One, two, three, four, five, six.

Think atoms in a grapefruit like blueberries in the Earth.

And maybe something that looks like that.

You change the protons, you got a different element.

We also all know that atoms are not the end of the story.

And when I say stuff, that's a very abstract concept, because we're talking about the nucleus, right?

Its volume increases roughly by a factor of 1000.

Now look inside the blueberry, and blow it up to the size of a football stadium, and now the nucleus is a marble in the middle.

The gap is very tiny, and I've blown it up so you can see it.

For instance, scientists have recovered DNA from the bacteria that transmits tuberculosis from the remains of ancient Egyptian mummies.

Now most of you are probably saying, well there's no such thing as nuclear fusion.

Here, the predictions of the Big Bang nucleosynthesis in plot it in one diagram.

and I'm sure that they still show up at some government defense labs or something like that is that you have a nucleus at the center of an atom.

What do you see there?

And that's where it gets philosophically interesting.

As a kid, I was obsessed with space.

You dig in another. Great!

So first we fill the 1s orbital, so if our nucleus is sitting here, our 1s orbital gets filled with two electrons.

A great deal of energy is locked up in the nucleus.

The decay energy is the energy released by a nuclear decay.

But a very efficient reaction.

So how big is the nucleus?

But that's a good starting point.

And these electrons are jumping around this nucleus.

Now there are three levels of self to consider the proto, the core and the autobiographical.

The atomic radius is the distance from the atomic nucleus to the outmost stable electron orbital in a atom that is at equilibrium.

So after helium, there is a big gap going to lithium, and then also another one going to boron, which is what limits the abundance of those elements.

Now, cars on average weigh two tons.